Politics of Singapore service appointments and national security matters. Singaporean politics have been dominated by the People's Action Party (PAP) since the 1959 general election when Lee Kuan Yew became Singapore's first prime minister (Singapore was then a self-governing state within the British Empire). The PAP has been the only ruling party to form the government since then. Singapore joined the Federation of Malaysia in 1963 and gained independence in 1965 after being expelled. Singapore has consistently been rated as the least-corrupt country in Asia and amongst the top ten cleanest in the world by Transparency International. The World Bank's governance indicators have
Federation independence from the sovereign state, which only takes care of their foreign relations and defence. However, they are neither considered to be part of it, nor recognised as sovereign or associated states. The distinction between a federation and a unitary state is often quite ambiguous. A unitary state may closely resemble a federation in structure and, while a central government may possess the theoretical right to revoke the autonomy of a self-governing region, it may be politically difficult for it to do so in practice. The self-governing regions of some unitary states also often enjoy greater autonomy than those of