Foreign relations of Malaysia letters of exchange by Abdullah and the Sultan Hassanal Bolkiah of Brunei at Istana Nurul Iman. As of 2010, the two countries are working towards resolving disputes over their maritime boundaries. According to a source, the areas around Ko Kra and Ko Losin in present-day Thailand are once disputed with Malaysia. The Federation of Malaya became an independent native elective monarchy within the Commonwealth on 31 August 1957 with the Yang di-Pertuan Agong as head of state. Malaya united with North Borneo (now Sabah), Sarawak, and Singapore to form Malaysia in 1963. Singapore was expelled from Malaysia in 1965, and
Rhodesian Security Forces of the British self-governing colony of Southern Rhodesia on its formation in 1923, then part of the Federation of Rhodesia and Nyasaland military in 1953. After the break-up of the Federation at the end of 1963, the security forces assumed the form they would keep until 1980. As the armed forces of Rhodesia (as Southern Rhodesia called itself from 1964), the Rhodesian Security Forces remained loyal to the Salisbury government after it unilaterally declared independence from Britain on 11 November 1965. Britain and the United Nations refused to recognise this, and regarded the breakaway state as a rebellious British colony