Treaties — Implementation — Effect in municipal courts — China-United Kingdom Joint Declaration on the Future of Hong Kong, 1984 — Whether provisions concerning grants of land justiciable in municipal courts — Government announcing implementation of the Joint Declaration — Whether giving rise to a justiciable legitimate expectation

Relationship of international law and municipal law — Treaties — China-United Kingdom Joint Declaration on the Future of Hong Kong, 1984, and accompanying Government announcements — Whether in the realm of treaties — Whether Joint Declaration incorporated into municipal law — Whether justiciable in municipal courts — Joint Declaration providing for Crown leases of lands to be extended without payment of premium — Whether applicant entitled to have his land lease renewed under the terms of the Joint Declaration — Determination of Government policy involving construction of the terms of the Joint Declaration — Whether courts permitted to construe the terms of the Joint Declaration — The law of Hong Kong