* December 20 – Treaty of Labiau is signed between Charles X Gustav of Sweden and Frederick William, Elector of Brandenburg.

When the tide of the war turned against Charles X Gustav, he concluded the Treaty of Labiau ( November 1656 ), making Frederick William I the full souvereign in Ducal Prussia and Ermland.

Continued pressure on Charles X Gustav resulted in him conceding full sovereignty in Ducal Prussia and Ermland to Frederick William by the Treaty of Labiau in November to ensure the maintenance of the alliance.

In the course of the Second Northern War, the Treaty of Labiau and the Treaty of Wehlau-Bromberg granted the Hohenzollern sovereignty in the Prussian duchy.

Charles Gustav, knowing that he needed the support of the Elector, agreed to sign the Treaty of Labiau ( November 20 ), which granted full sovereignty to the Prussian ruler, in exchange for his complete military support of Sweden in the ongoing war.

Territorial changes following the Treaty of Wehlau-Bromberg, compared to the pre-war situation ( 1654 ) and the treaties of Treaty of Königsberg ( 1656 ) | Königsberg ( January 1656 ) and Treaty of Labiau | Labiau ( November 1656 ).

The Duchy of Prussia, where Frederick William I was full sovereign by the Brandenburg-Swedish Treaty of Labiau, was accepted by the Polish-Lithuanian Commonwealth to be the sovereign possession of the House of Hohenzollern.

Territorial changes following the Treaty of Wehlau-Bromberg, compared to the pre-war situation ( 1654 ) and the treaties of Treaty of Königsberg ( 1656 ) | Königsberg ( January 1656 ) and Treaty of Labiau | Labiau ( November 1656 ).

Fifty lantern slide teaching sets on the subject of `` Emergency War Surgery ( NATO ) '' were assembled and distributed to the Medical Military Services of foreign Governments associated with NATO and South-East Asia Treaty Organization.

In July 1992, Azerbaijan ratified the Treaty on Conventional Armed Forces in Europe ( CFE ), which establishes comprehensive limits on key categories of conventional military equipment.

* The Protocol on Environmental Protection to the Antarctic Treaty was signed October 4, 1991 and entered into force January 14, 1998 ; this agreement prevents development and provides for the protection of the Antarctic environment through five specific annexes on marine pollution, fauna and flora, environmental impact assessments, waste management, and protected areas.

* 1977 – The Budapest Treaty on the International Recognition of the Deposit of Microorganisms for the Purposes of Patent Procedure is signed.

# REDIRECT Protocol on Environmental Protection to the Antarctic Treaty

In 1229, his mother, who was regent of France, forced the Treaty of Paris on Raymond VII of Toulouse after his rebellion.

* The Persian Encyclopedia, articles on Abbas Mirza, Persia-Russia Wars, Persia-Ottoman wars, Golestan Treaty, and Torkaman-Chay Treaty.

War was, however, forced on him and less than a year after his accession the complete defeat of the Turks at Battle of Kozluja led to the humiliating Treaty of Küçük Kaynarca on July 21, 1774.

Signed on August 12, 1980, the Montevideo Treaty is an international legal framework that establishes and governs the Latin American Integration Association.

As the Montevideo Treaty is a " framework treaty ", by subscribing to it, the governments of the member countries authorize their representatives to legislate through agreements on the economic issues of greatest importance to each country.

The Anti-Ballistic Missile Treaty ( ABM Treaty or ABMT ) was a treaty between the United States and the Soviet Union on the limitation of the anti-ballistic missile ( ABM ) systems used in defending areas against missile-delivered nuclear weapons.

On the one hand, Reagan stated that SDI was " consistent with ... the ABM Treaty ", but on the other hand, he viewed it as a defensive system that would help reduce the possibility that mutual assured destruction ( MAD ) would become reality ; he even suggested that the Soviets would be given access to the SDI technology.

John Rhinelander, a negotiator of the ABM treaty, predicted that the withdrawal would be a " fatal blow " to the Nuclear Non-Proliferation Treaty and would lead to a " world without effective legal constraints on nuclear proliferation.

Discussions led to the signing of the Strategic Offensive Reductions Treaty in Moscow on May 24, 2002.

Membership in the Commonwealth of Independent States, as well as the 1996 treaty on the Union of Russia and Belarus and the Treaty of the Formation of a Union State in 1999, has confirmed a close partnership with Russia.

The framework for the Union of Russia and Belarus was set out in the Treaty On the Formation of a Community of Russia and Belarus ( 1996 ), the Treaty on Russia-Belarus Union, the Union Charter ( 1997 ), and the Treaty of the Formation of a Union State ( 1999 ).

In 1915 Germany promised to restore the boundaries according to the Treaty of San Stefano and Bulgaria, which had the largest army in the Balkans, declared war on Serbia in October the same year.

Under the Treaty of Hünkar Iskelesi of 1833, the Bosporus and Dardanelles straits were to be closed on Russian demand to naval vessels of other powers.

On 20 September 1979, representatives of the United States and Kiribati met on Tarawa Atoll in the Gilberts group of Kiribati, and signed a treaty of friendship between their two nations ( commonly referred to as the Treaty of Tarawa of 1979 ) by which the United States recognized Kiribati's sovereignty over Malden and thirteen other islands in the Line and Phoenix Islands groups.

On May 20, 1875, 17 of 20 countries signed a document known as the Metric Convention or the Treaty of the Meter which established the International Bureau of Weights and Measures under the control of an international committee elected by the General Conference on Weights and Measures.

The treaty delimited the boundaries of Greece, Bulgaria, and Turkey ; formally ceded all Turkish claims on the Dodecanese Islands ( Article 15 ); Cyprus ( Article 20 ); Egypt and Sudan ( Article 17 ); Syria and Iraq ( Article 3 ); and ( along with the Treaty of Ankara ) settled the boundaries of the latter two nations.

On April 20, 1921, the Thomson – Urrutia Treaty with Colombia was ratified by the Senate and signed by Harding ; that awarded $ 25, 000, 000 as indemnity payment for land used to make the Panama Canal.

* October 20 – Treaty between the U. S. and the United Kingdom establishes the boundary between the U. S. and British North America as the 49th parallel from the Lake of the Woods to the Rocky Mountains, also creating the Northwest Angle.

** Commonwealth of Independent States Collective Security Treaty ( CST ) signed ( effective 20 April 1994 ).

* September 20 – French voters narrowly approve the Maastricht Treaty in the French Maastricht Treaty referendum.

* October 20 – Peru and Chile sign the Treaty of Ancón, by which the Tarapacá province is ceded to Chile, ending Peru's involvement in the War of the Pacific.

* August 20 – Treaty of London: Portugal and the United Kingdom define the borders of the Portuguese colonies of Mozambique and Angola.

* May 20 – Saudi Arabia becomes independent of the United Kingdom by the Treaty of Jedda.

* October 20 – The Senate ratifies the Louisiana Purchase Treaty, doubling the size of the United States.

* January 20 – King James I of England successfully mediates the Treaty of Knäred between Denmark and Sweden.

* August 20 – The Treaty of Nonsuch is signed, committing England to support the Dutch Revolt, thus entering the Eighty Years ' War.

* September 20 – The Treaty of Ryswick signed by France and the Grand Alliance to end both the Nine Years ' War and King William's War.

* October 20 – The Treaty of Gorinchem is signed between Charles V, Holy Roman Emperor, and Charles, Duke of Guelders.

* January 20 – Russo-Polish War ( 1654 – 1667 ): Poland cedes Kiev, Smolensk, and eastern Ukraine to Russia in the Treaty of Andrusovo, which puts a final end to Poland's status as a Central European power.

* February 20 – The first Treaty of Stockholm is signed.

* June 20 – The Pope proposes the Treaty of Anagni seeks to bring peace to between the house of Anjou and Sicily, in vain.

* September 20 – Treaty of Lambeth signed ratifying the Treaty of Kingston.

In accordance with the Hampton Court Treaty which they had signed with Condé on 20 September 1562, the English sent troops to support the Protestants, and these occupied Le Havre.

When Maxwell Fyfe charged that Raeder was guilty of violating both the Treaty of Versailles and the Anglo-German Naval Agreement and commented: " For 20 years, from 1918 to 1938, you and the German Navy had been involved in a course of complete, cold and deliberate deception of your treaty obligations ... Do you deny this was so ?".