Treaty on the Final Settlement with Respect to Germany (Two-plus-Four Treaty)

Treaty on the Final Settlement with Respect to Germany (Two-plus-Four Treaty)
Name	Treaty on the Final Settlement with Respect to Germany
Other names	Two-plus-Four Treaty
Signed	12 September 1990
Location	Moscow
Parties	Federal Republic of Germany; German Democratic Republic; United States; Soviet Union; United Kingdom; France
Effective	15 March 1991
Language	German language; English language; French language; Russian language

Treaty on the Final Settlement with Respect to Germany (Two-plus-Four Treaty)

The Treaty on the Final Settlement with Respect to Germany, commonly called the Two-plus-Four Treaty, settled external aspects of German reunification by involving the two German states and the four Allied powers from World War II. It provided diplomatic recognition, territorial settlement, and security arrangements that affected relations among NATO, the Warsaw Pact, United States, Soviet Union, United Kingdom, and France. The agreement completed a multilateral process that followed the political transformations of Revolutions of 1989 and the fall of the Berlin Wall.

Background

After Yalta Conference and Potsdam Conference arrangements, Germany remained divided into the Federal Republic of Germany (FRG) and the German Democratic Republic (GDR), with occupation and security frameworks shaped by Allied Control Council legacies and the presence of United States Armed Forces, British Army, French Armed Forces, and the Soviet Armed Forces. The collapse of Communist Party of the Soviet Union authority and the mass mobilizations of 1989—epitomized by demonstrations in Leipzig and the opening of the Berlin Wall—created momentum for reunification. Leaders including Helmut Kohl, Mikhail Gorbachev, George H. W. Bush, Margaret Thatcher, and François Mitterrand navigated domestic politics and alliance commitments while addressing questions tied to Treaty of Versailles, Polish–German border stability at the Oder–Neisse line, and force deployments tied to NATO membership.

Negotiation and Signing

Negotiations followed an initial diplomatic framework set out in talks among the two German capitals and the four Allied capitals, sometimes called the Two-plus-Four format after the 1990 meetings in Bonn, Moscow, Paris, London, and Washington, D.C.. The FRG delegation led by Helmut Kohl negotiated with the GDR delegation under Lothar de Maizière alongside foreign ministers such as Hans-Dietrich Genscher and Edmund Stoiber advocates, while the Four Powers were represented by officials including James Baker, Eduard Shevardnadze, Douglas Hurd, and Roland Dumas. The treaty text was initialed amid intense diplomatic shuttle visits, culminating in signature in Moscow on 12 September 1990; ratification required parliamentary approval in Bundestag and endorsement by Supreme Soviet of the Soviet Union elements before entry into force on 15 March 1991.

Key Provisions

The treaty affirmed full sovereignty for a unified Germany within its existing borders, obliging parties to respect the Oder–Neisse line as the frontier with Poland and renouncing territorial claims tied to the Treaty of Versailles. It limited German armed forces by capping the size and prohibiting certain weapons, affecting deployments of Bundeswehr units and banning nuclear, chemical, and biological weapons on German territory; the agreement also regulated the withdrawal timetable for Soviet Armed Forces from the former GDR. Moreover, the treaty allowed unified Germany to join NATO while obliging it not to deploy nuclear weapons or substantial foreign forces on former GDR territory, balancing NATO enlargement concerns with Soviet security interests and linking to wider arms control processes involving Strategic Arms Reduction Treaty discussions.

Implementation and Verification

Implementation required coordinated action among executive authorities and parliamentary bodies in Bonn and East Berlin, and operational measures on the ground involving Soviet Armed Forces withdrawal logistics, property transfers, and legal assimilation of GDR institutions into FRG frameworks such as the Basic Law for the Federal Republic of Germany. Verification mechanisms involved military liaison, scheduled inspections, and reporting to the Four Powers to ensure compliance with force limitation clauses and withdrawal timetables. Financial arrangements addressed costs of troop redeployment and environmental remediation at former military sites, while international organizations including United Nations forums and bilateral commissions monitored residual issues like citizenship transitions and border administration with Poland.

International and Legal Impact

Legally, the treaty is widely regarded as the final internationally negotiated settlement ending post‑1945 occupation status and restoring full sovereignty to Germany, influencing subsequent jurisprudence in International Court of Justice contexts and treaty practice regarding state succession. It provided a precedent for resolving questions of external guarantees, minority protections, and frontier finality, intersecting with instruments such as the Treaty on Conventional Armed Forces in Europe and shaping debates over European Union enlargement and NATO eastward expansion. The accord also constrained German foreign policy options in specific domains while freeing Berlin to pursue integration with European Community institutions, ultimately paving the way for unified Germany to play a leading role in continental affairs.

Reception and Legacy

Reception varied: proponents in Bonn and among Western capitals praised the treaty for enabling peaceful reunification and stabilizing Europe after the Cold War, while critics in parts of Moscow and segments of the German left and Polish politics expressed concerns about security assurances and the speed of economic integration. Over time, scholarship has treated the treaty as a landmark in diplomatic history linking figures such as Helmut Kohl and Mikhail Gorbachev to the end of the Cold War; it remains cited in discussions of sovereignty restoration, regional order, and the legal normalization of borders in post‑Cold War Europe. The Two‑plus‑Four Treaty continues to inform contemporary debates about NATO enlargement, European security architecture, and the historical memory of German reunification.

Category:Cold War treaties Category:1990 in international relations Category:1990 in Germany