Dismissed by published opinion. Judge LUTTIG wrote the majority opinion, in which Judge WILLIAMS concurred. Judge K.K. HALL wrote a dissenting opinion.
OPINION
LUTTIG, Circuit Judge:Defendants Gaston Reymenants and Kola International Limited Establishment appeal the district court’s order remanding plaintiff Severonickel’s breach of contract action to Maryland state court. Because the district court remanded the case to the state tribunal because it appeared to the court that it lacked federal subject matter jurisdiction, we in turn lack jurisdiction over the appeal from that order. 28 U.S.C. § 1447(d). We therefore dismiss.
*266I.
Pursuant to an oral contract entered by the Russian corporation Severonickel and the Liechtenstein business organization Kola International, which is managed and controlled by the Belgian citizen Gaston Reymenants, Reymenants and/or Kola was to serve as Severonickel’s broker for the sale of approximately 800 tons of Severonickel’s nickel powder warehoused in Baltimore. In November 1994, believing that Reymenants and Kola (hereinafter “Reymenants”) had failed to pay Severonickel for approximately $3 million worth of nickel powder and to account for sales and return any unsold powder, Sever-onickel filed a breach of contract claim against Reymenants and Kola in Maryland Circuit Court. After several months of discovery disputes, Reymenants removed the case to the United States District Court for the District of Maryland under 9 U.S.C. § 205, which authorizes removal of state court actions “relat[ing] to an arbitration agreement ... falling under” the Convention on the Recognition and Enforcement of Foreign Arbitral Awards, 9 U.S.C. §§ 201-208.
Severonickel thereafter moved for a remand to state court, arguing that the underlying dispute arose out of an oral nickel powder contract which did not itself include an arbitration clause and which was not subject to any arbitration agreement, and therefore that there was no federal jurisdiction over the breach of contract claim. Reyme-nants conceded that the nickel powder contract between Severonickel and Reymenants did not itself include an arbitration provision. Reymenants contended, however, that the dispute was nonetheless subject to the arbitration clause in an April 22, 1992, “tolling contract” between the parties, by operation of a September 9, 1993, Protocol (“Protocol”) between Reymenants and a subsidiary of Severonickel, which incorporated the nickel powder agreement and made the Protocol an “integral part” of the tolling contract. Thus, Reymenants argued that disputes under the nickel powder contract are governed by the arbitration agreement because the Protocol incorporates the nickel powder agreement, the Protocol is part of the tolling contract, and the tolling contract provides for arbitration of disputes arising under the tolling contract.
The validity of both the tolling contract and the Protocol, as well as the relationship among the agreements, was contested before the district court. The tolling contract, which allegedly includes the arbitration clause, was never introduced into evidence because Reymenants argued that a “confidentiality agreement” prevented its introduction, and Severonickel declined to stipulate even to the contract's existence, much less to its validity. The validity of the Protocol was drawn into question because it was never signed by Severonickel. Reymenants asserted that Kola ABC, which did sign the Protocol, was an agent of Severonickel, but he based that alleged agency relationship in part on the tolling contract, which he refused to introduce into evidence.
Following a full hearing at which these issues were argued, the district court granted Severonickel’s motion to remand to state court, reciting that the court lacked subject matter jurisdiction over the dispute. The district court remanded the case without prejudice, so as, in its view, not to foreclose removal to federal court in the future should it appear that federal jurisdiction would lie. Reymenants appealed.
II.
Appellate review of district court orders remanding removed cases to state courts is barred by 28 U.S.C. § 1447, which provides inter alia that such orders are “not renewable on appeal or otherwise” if the district court remanded the case on the ground that “it appealed] [to the district court] that the district court lack[ed] subject matter jurisdiction.” 28 U.S.C. § 1447(c) & (d); see Thermtron Products, Inc. v. Hermansdorfer, 423 U.S. 336, 346, 96 S.Ct. 584, 590-91, 46 L.Ed.2d 542 (1976) (limiting section 1447(d) to “remand orders issued under § 1447(c) and invoking the grounds specified therein”).1
*267Here, it cannot reasonably be disputed that the district court remanded this case to state court because it appeared to the court that it lacked subject matter jurisdiction over the controversy. The court’s short, one-page written order reads as follows: “[T]his Court concludes that the removal of this action was demonstrably improvident, and that therefore subject matter jurisdiction is lacking in this case.” J.A. at 124 (emphasis added). The order further recites that “this case is REMANDED, without prejudice, to the Circuit Court for Baltimore City, for lack of jurisdiction.” Id . (emphasis added). And the court ordered that “the CLERK of the court CLOSE [the] case.” Id.
Were there any doubt that the district court dismissed the case because it appeared to the court that it lacked subject matter jurisdiction, such doubt is put to rest upon even a cursory review of the court’s comments from the bench during the hearing on the motion to remand. At the hearing, the court derided Reymenants’ jurisdictional argument as resting on “what appears to be just the thinnest of conceivable bases,” “far too thin a basis for this Court to exercise jurisdiction,” J.A at 117 — namely, the “rather maze like” relationship between the “secret arbitration agreement,” which Reyme-nants refused to proffer, and the other agreements, “one of which [was] not even signed” by Severonickel. JA. at 93. The court concluded that “federal jurisdiction, frankly, doesn’t seem close on the record as it now exists, doesn’t seem close. Doesn’t seem close.” J.A. at 93; see also id. at 115 (“[T]he jurisdictional basis is, at best, thin and ethereal.”). The court even said that it was “able to say[,] on the basis of the record as it now exists[,] with fair assurance, [that] there is no binding arbitration agreement” between the parties. J.A at 117.
Thus, contrary to Reymenants’ suggestion, it is apparent that the express language of the district court’s order that it was dismissing the ease for lack of subject matter jurisdiction was anything but “rote incantation,” see Reply Br. at 7. Quite clearly, “the actual ground[ ] or basis upon which the district court considered[that] it was empowered to remand,” see Mangold v. Analytic Services, Inc., 77 F.3d 1442, 1450 (4th Cir.1996), was that it appeared to the court that it lacked subject matter jurisdiction.
Notwithstanding the clarity of the district court’s order, the equally unambiguous confirmation of the court’s intention in its remarks from the bench, and the fact that the district court nowhere even so much as mentions abstention, Reymenants argues that the court actually did not dismiss the case for lack of subject matter jurisdiction; rather, it “abstained” from exercising its “jurisdiction” to decide whether it had subject matter jurisdiction,2 as evidenced by the fact that it did not decide whether in fact the nickel powder dispute was arbitrable and even suggested that Reymenants might establish arbitrability on remand and then reattempt removal.
Were we forced to decide, as Reymenants would have us do, whether the district court decided to abstain altogether from addressing the question of the nickel powder agreement’s arbitrability or whether the court in*268stead decided that in fact no arbitration agreement exists, we would unhesitatingly conclude, from its order and bench comments, that the court decided that no arbitration agreement exists. This is a false choice, however, because the district court actually decided neither, at least in the sense urged by Reymenants. It is clear from the court’s order and comments that it did not simply “decline to exercise its jurisdiction ... in the interest of ‘judicial economies and efficiencies that cannot otherwise be achieved,’ ” see Appellant’s Br. at 11; indeed, for the reasons explained, it is plain that the court exercised its jurisdiction to determine whether it had jurisdiction over this dispute. It is just as clear from the court’s comments concerning the possibility of a later removal attempt that the court did not determine that in fact no arbitration agreement exists.3 Rather, the court decided based upon the record then before it, and by resolving all doubts as to its jurisdiction in favor of remand as required, only that Reymenants failed to carry his burden of establishing the existence of a valid and applicable arbitration agreement which would support federal jurisdiction. This was the question the court was required to decide, and the only question it was required to decide. And at least in this case, where the party upon whom the burden of establishing federal jurisdiction rests refused to proffer the document that he contended established federal jurisdiction and the second document purportedly necessary to that jurisdiction was not even signed by the opposing party, that decision, even in the absence of further discovery, is unassailable. Cf. In re Business Men’s Assurance Co., 992 F.2d 181, 183 (8th Cir.1993) (holding that district court did not abuse its discretion in ordering remand without sum sponte granting a hearing to determine whether there was an ERISA plan triggering federal jurisdiction).4
Even had the court not determined the arbitrability of the dispute (in the only sense that mattered), we still would be without jurisdiction to review the district court’s order of remand. For, in that event, it would not follow that the court did not dismiss the action on the ground that it appeared to the court that it lacked subject matter jurisdiction, as Reymenants vigorously asserts. It would follow, at most, only that the court erred in its determination that it lacked subject matter jurisdiction (or more precisely, that it erred in the manner in which it undertook the jurisdictional inquiry). However, as the Supreme Court has made clear, and as we have held, “[wjhere the order is based on one of the enumerated grounds[in section 1447(e) ], review is unavailable no matter how plain the legal error in ordering the remand.” Briscoe v. Bell, 432 U.S. 404, 414 n. 13, 97 S.Ct. 2428, 2434 n. 13, 53 L.Ed.2d 439 (1977); see Mangold, 77 F.3d at 1450 (stating that if *269the district court invoked the grounds specified in § 1447(c), the order is unreviewable “even if it be manifestly, inarguably erroneous”). Were it otherwise, there would occur the very “delay in the trial of remanded cases by protracted litigation of jurisdictional issues,” see Thermtron, 423 U.S. at 351, 96 S.Ct. at 593 (citation omitted), which it was Congress’ purpose in enacting section 1447(d) to avoid.
The district court having remanded this case on the ground that it appeared to that court that it lacked subject matter jurisdiction, we are without jurisdiction over this appeal. Accordingly, the appeal is dismissed for lack of appellate jurisdiction.
DISMISSED.
. 28 U.S.C. § 1447(d) provides in full: “An order remanding a case to the State court from which it was removed is not reviewable on appeal or otherwise, except that an order remanding a case *267to the State court from which it was removed pursuant to section 1443 of this title shall be reviewable by appeal or otherwise.” We are not concerned in this case with section 1447(d)'s exception for cases removed pursuant to section 1443.
. Because Reymenants must argue not only that we have appellate jurisdiction, but also that the district court erred in its remand, in order to prevail, it repeatedly casts this argument as one that the district court "failed to exercise its jurisdiction to determine” whether the dispute was arbitrable. This formulation preserves Reyme-nants' argument that the district court had jurisdiction under section 205 immediately upon the removal; that it was required to exercise that jurisdiction to decide the arbitrability question because there were no permissible grounds for abstention; and that, because the court did not decide arbitrability, its remand was in error. This formulation also has the incidental (or, perhaps, not-so-incidental) effect of misfocusing the dispositive inquiry from the actual basis for the district court’s remand, to the arbitrability vel non of the contractual dispute: Because, in this context, arbitrability is determinative of federal jurisdiction, however, the questions of whether the court abstained from exercising conceded jurisdiction to determine arbitrability and whether the court abstained from exercising jurisdiction to determine whether it had subject matter jurisdiction, are one in the same.
. The district court may well have been mistaken in its observation that Reymenants might be able to remove the case again, following additional discovery in state court. See, e.g., Appellant's Reply Br. at 2 ("[I]f the court had made the arbitrability determination, then Reymenants ... would not have the opportunity to petition for a second removal; the case would either be in arbitration or in state court, to remain in state court."); see also St. Paul & Chicago Railway Co. v. McLean, 108 U.S. 212, 217, 2 S.Ct. 498, 500-501, 27 L.Ed. 703 (1883); S.W.S. Erectors, Inc. v. Infax, Inc., 72 F.3d 489, 492 (5th Cir.1996). Whether the court was correct on this score or not, however, has no bearing on the question of the court’s basis for remanding the case to state court.
. Contrary to Reymenants' argument, 9 U.S.C. § 4 did not require the district court to hold a trial on the arbitrability of the parties’ dispute. Section 4, which provides that "[i]f the making of [an] arbitration agreement or the failure, ne-giect, or refusal to perform the same be in issue, the court shall proceed summarily to the trial thereof," applies, as the district court below noted, only where the district court would have jurisdiction over the dispute even in the absence of the arbitration agreement. As the first sentence of the section provides:
A party aggrieved by the alleged failure, neglect, or refusal of another to arbitrate under a written agreement for arbitration may petition any United States district court which, save for such agreement, would have jurisdiction under Title 28, in a civil action or in admiralty of the subject matter of a suit arising out of the controversy between the parties, for an order directing that such arbitration proceed in the manner provided for in such agreement.
9 U.S.C. § 4. Here, absent the arbitration agreement alleged to exist by Reymenants, there would be no possible basis for federal jurisdiction, as the underlying breach of contract claim raised no federal question and the parties agree that there is no diversity jurisdiction.