Singapore Minister for Foreign Affairs Vivian Balakrishnan yesterday called on Malaysian Deputy Prime Minister Ahmad Zahid Hamidi in Kuala Lumpur during a two-day introductory visit to Malaysia, and reaffirmed the excellent ties between the two countries, said Singapore's Ministry of Foreign Affairs. Dr Balakrishnan wrote on his Facebook page yesterday: "Good discussion on maintaining the strong Asean position against drug abuse and common security challenges." He met Prime Minister Najib Razak on Thursday.