During his brief tenure as Minister of Justice he pressed for the extradition and criminal prosecution of deposed East German dictator Erich Honecker and sought to end the left-wing terrorism of the Red Army Faction. As Foreign Minister he is regarded as one of the most influential European politicians of the 1990s. He personified an "assertive foreign policy", increased Germany's peacekeeping engagements overseas, was at the forefront among Western leaders of building a relationship with Boris Yeltsin's newly democratic Russian Federation and pressed for Germany to be given a permanent seat on the UN Security Council. He also championed the Maastricht Treaty, the merging of the Western European Union with the EU to give the EU an independent military capability and the expansion of the EU. Kinkel played a central role in the efforts to resolve the Yugoslav Wars of the 1990s, and proposed the creation of the International Criminal Tribunal for the former Yugoslavia.