South African President Cyril Ramaphosa tells G20 foreign ministers that multilateralism and international law were key to solving world crises, amid rising tensions over various conflicts and trade disputes. "It is critical that the principles of the UN Charter, multilateralism and international law should remain at the centre of all our endeavours. It should be the glue that keeps us together," he says at the opening of a meeting of G20 foreign ministers in Johannesburg. SOUNDBITES