MEMORANDUM OPINION
Plaintiff Mutual Service Casualty Insurance Company has brought this lawsuit under the Declaratory Judgment Act, 28 U.S.C.A. § 2201, to determine the rights and duties of all parties in relation to several insurance policies. The company has invoked the jurisdiction of the court pursuant to 28 U.S.C.A. § 1332 (diversity of citizenship). The defendants are Frit Industries, Inc., Inter-Industry Insurance Com-' pany, Ltd., Insurco International, Ltd., Agrichem Insurance Company, Ltd., First State Insurance Company, and Employers Insurance of Wausau. To resolve these same issues, Inter-Industry has filed an action for declaratory and injunctive relief in the High Court of Justice of the Isle of Man, and Insurco and Agrichem have brought a similar action in the Grand Court of the Cayman Islands. This cause is now before this court on motions filed by Frit Industries and Mutual Service requesting that this court enjoin these two foreign proceedings. For the reasons that follow, the court concludes that the motions should be granted in part and denied in part.
I. BACKGROUND
On March 5, 1992, Mutual Service filed the lawsuit against the defendants. Mutual Service, Inter-Industry, Insurco, Agri-chem, First State, and Wausau have all issued insurance policies to Frit Industries. Mutual Service is seeking a determination of the duties of all of Frit Industries’s insurers to defend and provide coverage to the company in three lawsuits pending against the company in North Carolina. Under an agreement with First State and Wausau, Mutual Service has contributed to the defense costs for two of the underlying lawsuits. Inter-Industry, Insurco, and Agrichem have denied coverage to Frit Industries under their policies. On May 13, Frit Industries filed a counterclaim against Mutual Service and cross-claims against Inter-Industry, Insurco, and Agrichem. Frit Industries contends that these three insurance companies have a duty to defend it in the three underlying lawsuits and to pay any judgment or settlement rendered against it.
Inter-Industry has its principal place of business and is incorporated in the Isle of Man, British Isles. On June 23, the insurance company filed an action for declaratory and injunctive relief in the High Court of Justice of the Isle of Man, naming Frit Industries and Mutual Service as defendants. Inter-Industry is asking the Isle of Man court to interpret the two policies it issued to Frit Industries and to determine whether it has a duty to defend Frit Industries in the underlying suits or to indemnify either Frit Industries or Mutual Service. Inter-Industry has also made two significant additional requests: first, an injunction prohibiting Mutual Service and Frit *921 Industries from proceeding further with their action for declaratory judgment before this court and, second, a declaration that all questions relating to Inter-Industry’s duties be determined within the Isle of Man proceedings.
Insurco and Agrichem have their principal places of business and are incorporated in the Cayman Islands, British West Indies. On June 24, the two companies filed a lawsuit in the Grand Court of the Cayman Islands, again naming Frit Industries and Mutual Service as defendants. Insurco and Agrichem are seeking a declaratory judgment to determine their duties to Frit Industries under the insurance policies they issued to the company.
In their motions before this court, Frit Industries and Mutual Service ask this court to enjoin Inter-Industry, Insurco, and Agrichem from proceeding with their suits in the courts of the Isle of Man and the Cayman Islands.
II. DISCUSSION
Federal courts have the discretionary power to enjoin parties subject to their jurisdiction from pursuing parallel in per-sonam litigation before a foreign tribunal.
China Trade & Dev. v. M. V. Choong Yong,
However, for several reasons, this court disagrees that the above showing is adequate for issuance of an injunction against a parallel in personam foreign proceeding. First, although duplication of issues and parties may be threshold conditions, they simply point out the obvious and are not effective and instructive standards by which a court could determine whether to issue an injunction against a foreign proceeding; a duplication of parties and issues will almost always be present whenever there are parallel in personam proceedings. Second, the additional showings that Frit Industries and Mutual Service would require — judicial economy, race-to-
*922
judgment, and potentially inconsistent judgments — do not withstand close scrutiny. Concerns for judicial economy are, in the first instance, more properly considered in a motion for
forum non conveniens. Laker Airways,
Third, the power to enjoin foreign proceedings raises significant and substantial issues of international comity and sovereignty.
Gau Shan Co., Ltd. v. Bankers Trust Co.,
Fourth and finally, it is a well established part of this country’s jurisprudence that, when two sovereigns have concurrent in personam jurisdiction, one court will ordinarily not interfere with or try to restrain proceedings before the other.
Colorado River Water Conservation Dist. v. United States,
For the above reasons, this court rejects the argument that duplication of parties and issues, supplemented by some showing of judicial economy, race-to-judgment, or potentially inconsistent judgments, would justify an injunction against a parallel in personam foreign proceeding. Instead, other circumstances, sufficiently significant and substantial to outweigh the important principles of comity and mutual respect owed to concurrent foreign proceedings, must be present before a court may properly and wisely enjoin a foreign proceeding.
Gau Shan Co.,
Important Public Policies.
Although there is no clear-cut rule regarding what constitutes an enjoinable evasion of forum law and policy, the availability of slight advantages in the substantive or procedural law to be applied in the foreign court is not sufficient.
Piper Aircraft Co. v. Reyno,
The facts in this case are also not comparable to those in the former Fifth Circuit case of
In re Unterweser Reederei, GMBH v. M/S Bremen,
Protecting Jurisdiction. Concerns regarding this court’s continued jurisdiction do, however, warrant a limited injunction against Inter-Industry’s suit in the High Court of the Isle of Man. The Isle of Man suit is in part an attempt to avoid the jurisdiction of this court. In addition to asking for a declaratory judgment, the insurance company has requested that the High Court of Justice of the Isle of Man issue an injunction prohibiting Frit Industries and Mutual Service from continuing with their claims for declaratory relief before this court. Inter-Industry’s foreign litigation is therefore not entirely parallel to the proceeding before this court; it is instead an attempt to carve out exclusive jurisdiction over the action in the Isle of Man and to terminate the action before this court.
*925
This aspect of Inter-Industry’s foreign litigation is analogous to the situation in
Laker Airways.
There, after the English Court of Appeal enjoined Laker’s litigation of its claims against several British defendants in a United States court under United States law, the United States district court enjoined other defendants in the
Laker Airways
action from seeking similar injunctions from the English Court of Appeal. Notwithstanding its stringent standard for issuing anti-suit injunctions in foreign proceedings, the District of Columbia Circuit upheld the district court’s injunction because it was necessary to preserve the court’s jurisdiction. Without the injunction, the English proceedings would have been used to terminate the action before the American court.
See also United States v. Davis,
Because the Isle of Man litigation is being used in part to terminate the action before this court, an injunction is necessary to preserve this court’s jurisdiction over this action as well as this court’s ability to reach judgment on the matter before it. This case is one of those rare situations where comity must give way to a forum’s need to protect its interests. Therefore, this court will enter an order affording relief to Frit Industries and Mutual Service. However, because “[cjomity teaches that the sweep of the injunction should be no broader than necessary to avoid the harm on which the injunction is predicated,”
Laker Airways,
Because Insurco and Agrichem’s lawsuit in the Grand Court of the Cayman Islands does not contain a similar request for in-junctive and declaratory relief, that litigation does not raise the same concerns, and an injunction against it, in whole or in part, is not warranted.
An appropriate order and injunction will be entered.
Notes
. In response to Frit Industries and Mutual Service’s motions, Inter-Industry, Insurco, and Agrichem have contested this court’s in person-am jurisdiction over them. In its order of August 28, 1992, the court rejected this contention, and these defendants have not presented any new evidence that would warrant a different conclusion today.
. Although not directly applicable in this case, the policies underlying the Anti-Injunction Act, 28 U.S.C.A. § 2283, are instructive. The act allows a federal court to issue an injunction of a state-court proceeding "where necessary in aid of its jurisdiction,” but this exception is narrowly construed and cannot be invoked simply because of the prospect that a concurrent state proceeding might result in a judgment inconsistent with the federal court’s decision.
Atlantic Coast Line R.R. Co. v. Bhd. of Locomotive Eng’rs,
Similarly, the statute permits a federal court to issue an injunction to “protect or effectuate its judgments," but this exception does not "permit a federal court to enjoin state proceedings to protect a judgment that the federal court may make in the future but has not yet made. To allow this would run afoul of the rule that in personam actions involving the same controversy may proceed simultaneously in both state and federal courts.” 17 C. Wright, A. Miller, & K. Graham, Federal Practice and Procedure § 4226 (1988).
. The rule favoring parallel proceedings in matters subject to concurrent jurisdiction applies primarily to requests for injunctions prior to a judgment on the merits. Where one court has already reached a decision, there is less justification for permitting relitigation by another court and a court may act to protect the integrity of its judgment.
Laker Airways,
Similarly, the Anti-Injunction Act provides that a federal court may grant an injunction of a state proceeding "to protect or effectuate its judgments." 28 U.S.C.A. § 2283. This “relit-igation exception” was designed to permit a federal court to prevent state litigation of an issue that previously was presented to and decided by the federal court.
Chick Kam Choo v. Exxon Corp.,
. In contrast, in proceedings
in rem
or
quasi in rem,
usually the court assuming jurisdiction over
Has. property
first may exercise that jurisdiction to the exclusion of other courts.
Colorado River,
. The policies underlying the Anti-Injunction Act, 28 U.S.C.A. § 2283, are again instructive. They also indicate that federal courts should proceed with restraint in interfering with foreign courts. The act removes from federal courts the equitable power to grant injunctions to stay state-court proceedings "except as expressly authorized by Act of Congress or where necessary in aid of its jurisdiction, or to protect or effectuate its judgments.” 28 U.S.C.A. § 2283.
In contrast, where two courts are of the same sovereignty, considerations of judicial administration and conservation of judicial resources predominate and the general principle is to avoid duplicative litigation.
Colorado River,
. The .court is not suggesting that these two circumstances are the only ones. For example, the record does not support a fact situation in which one party seeks to defeat its opponent by financially bludgeoning it with duplicative foreign lawsuits and in which the opponent has no means by which to seek fair redress in foreign courts for such extremely vexatious and prohibitively burdensome conduct. This court, therefore, does not have to resolve whether that situation or a related one would warrant an injunction against such foreign litigation.
. This court disagrees with the Sixth Circuit’s characterization of
In re Unterweser Reederei
as standing for the proposition that a duplication of parties and issues is alone sufficient to justify a foreign anti-suit injunction.
Gau Shan Co.,
