History of Germany (1945–90) on 13 February 1990. The six foreign ministers met four times in the ensuing months in Bonn (5 May), Berlin (22 June), Paris (17 July), and Moscow (12 September). The Polish Foreign Minister participated in the part of the Paris meeting that dealt with the Polish-German borders. Overcoming Soviet objections to a united Germany's membership in NATO was of key importance. This was accomplished in July when the alliance, led by President George H.W. Bush, issued the London Declaration on a transformed NATO. On 16 July, President Gorbachev and Chancellor Kohl announced the agreement in principle on a united Germany
Legal status of Germany presence was also maintained until the full implementation, in 1994, of the Two Plus Four Treaty, signed in 1990. Under the terms of the 1990 Treaty on the Final Settlement with Respect to Germany, the Four Powers renounced all rights they formerly held in Germany, including Berlin. As a result, Germany became fully sovereign on March 15, 1991. After Germany joined the United Nations, there had been disagreement as to whether articles 53 and 107 of the UN Charter, which named Germany as an "enemy state", still applied, but these articles became irrelevant when the Four Powers renounced their special