Mr Teo, who is also Coordinating Minister for National Security, spoke to the media about the need for ministries to work together, his 53-year public service career, and what he would share with Singapore's new leaders. SINGAPORE: Senior Minister Teo Chee Hean announced last month that he is stepping down after 53 years in public service, including 33 years in politics. In a wide-ranging interview with the media on Tuesday (May 20) ahead of his retirement, Mr Teo said finely tuned coordination