—(1) There shall be —

6.—(1) There shall be — (a) no surrender or transfer, either wholly or in part, of the sovereignty of the Republic of Singapore as an independent nation, whether by way of merger or incorporation with any other sovereign state or with any Federation, Confederation, country or territory or in any other manner whatsoever; and (b) no relinquishment of control over the Singapore Police Force or the Singapore Armed Forces, unless such surrender, transfer or relinquishment has been supported, at a national referendum, by not less than two‑thirds of the total number of votes cast by the electors registered under the Parliamentary Elections Act 1954. (2) For the purposes of this Article — “Singapore Armed Forces” means the Singapore Armed Forces raised and maintained under the Singapore Armed Forces Act 1972, and includes any civil defence force formed under the Civil Defence Act 1986 and such other force as the President may, by notification in the Gazette, declare to be an armed force for the purposes of this Article; “Singapore Police Force” means the Singapore Police Force and the Special Constabulary established under the Police Force Act 2004 and any Auxiliary Police Force created in accordance with Part 9 of that Act, and includes the Vigilante Corps established under the Vigilante Corps Act 1967 and such other force as the President may, by notification in the Gazette, declare to be a police force for the purposes of this Article. Participation in co-operative international schemes which are beneficial to Singapore