The United Malays National Organisation is Malaysia's largest political party. It is a founding member of the Barisan Nasional coalition which, with its predecessor the Alliance, have dominated Malaysian politics since independence. Each of Malaysia's six Prime Ministers has been an UMNO member.UMNO emphasises as its foundation the struggle to uphold the aspirations of Malay nationalism and the dignity of race, religion and country. The party also aspires to protect the Malay culture as the national culture and to uphold, defend and expand Islam across Malaysia.HistoryAfter the British returned to Malaya in the aftermath of World War II, the Malayan Union was formed. However, the Union was met with much opposition due to its constitutional framework, which allegedly threatened Malay sovereignty over Malaya. A series of Malay congresses were held, culminating in the formation of the nationalist party, UMNO on 10 May 1946 at the Third Malay Congress in Johor Bahru, with Datuk Onn Jaafar as its leader. UMNO strongly opposed the Malayan Union, but originally did not seek political power. UMNO has no choice with continuing to play its supporting role to the British rulers. The British cooperated with UMNO leaders and helped to defeat the communist insurgency.