(ANSA) - BELGRADE - Prime Minister Aleksandar Vucic and the entire Serbian leadership have strongly condemned some statements made by former head of the OSCE mission in Kosovo, William Walker, who has openly admitted he's supporting and working in favour of the ''Greater Albania'' project, which means the unification within a single state of all ethnic Albanian populations in the Balkans. ''The goal of the project I am working on is in favour of all Albanians in Kosovo, Albania and other countries. I am working on a project aiming to unite them all'', Walker said on Monday on the sidelines of a ceremony in Pristina. Walker, aged 81, is a former US diplomat who does not enjoy a good reputation in Serbia. In the late 1990s, his statements on an alleged 'massacre' by Serbian forces in Racak paved the way for the NATO bombing in spring 1999 against Slobodan Milosevic's Serbia. According to Vucic, this is ''the definitive proof that Walker's true goal has never been the defence of human rights in Kosovo, but the struggle against Serbia and the creation of a Greater Albania''. Serbia's European Integration Minister, Jadranka Joksimovic, announced that Belgrade will call on the United Nations to condemn William Walker's statements. (ANSA).