142 The Constitution of the Democratic Socialist Republic of Sri Lanka CHAPTER XX GENERAL International Treaties and Agreements Prohibition against violation of territorial integrity of Sri Lanka 157. Where Parliament by resolution passed by not less than two-thirds of the whole number of Members of Parliament (including those not present) voting in its favour, approves as being essential for the development of the national economy, any Treaty or Agreement between the Government of Sri Lanka and the Government of any foreign State for the promotion and protection of the investments in Sri Lanka of such foreign State, its nationals, or of corporations, companies and other associations incorporated or constituted under its laws, such Treaty or Agreement shall have the force of law in Sri Lanka and otherwise than in the interests of national security no written law shall be enacted or made, and no executive or administrative action shall be taken, in contravention of the provisions of such Treaty or Agreement. 144 [157A. (1) No person shall, directly or indirectly, in or Sri Lanka support, espouse, encourage or advocate the establishment of a separate State within the territory of Sri Lanka. (2) No political party or other association or organization shall have as one of its aims or objects the establishment of a separate State within the territory of Sri Lanka. (3) Any person who acts in contravention of the provisions of paragraph (1) shall, on conviction by the Court of Appeal, after trial on indictment and according to such procedure as may be prescribed by law, – (a) be subject to civic disability for such period not exceeding seven years as may be determined by such Court; (b) forfeit his movable and immovable property other than such property as is determined by an order of such Court as being necessary for the sustenance of such person and his family; (c) not be entitled to civic rights for such period not exceeding seven years as may be determined by such Court; and 144 - Article 157A inserted by the Sixth Amendment to the Constitution Sec. 3.