History of Singapore
During World War 2, Singapore was conquered and occupied by the Japanese Empire from 1942 to 1945. When the war ended, Singapore reverted to British control, with increasing levels of self-government being granted, culminating in Singapore's merger with the Federation of Malaya to form Malaysia in 1963. However, social unrest and disputes between Singapore's ruling People's Action Party and Malaysia's Alliance Party resulted in Singapore's expulsion from Malaysia. Singapore became an independent republic on 9 August 1965.
Sook Ching
The Sook Ching (, meaning 'purge through cleansing') was a systematic purge of perceived hostile elements among the Chinese in Singapore by the Japanese military during the Japanese occupation of Singapore and Malaya, after the British colony surrendered on 15 February 1942 following the Battle of Singapore. The purge took place from 18 February to 4 March 1942 at various places in the region. The operation was overseen by the Kempeitai secret police and subsequently extended to include the Chinese population in Malaya.