President Donald Trump has said the US will no longer tolerate "chronic trade abuses", in a defiant address at the Asia-Pacific Economic Co-operation (Apec) summit in Vietnam.

He said he would always put US interests first and Apec nations should "abide by fair reciprocal trade".

In stark contrast, China's Xi Jinping said globalisation was irreversible and voiced support for multilateralism.

Mr Trump has visited China and Japan as part of his five-nation Asia tour.

Apec brings together 21 economies from the Pacific region - the equivalent of about 60% of the world's GDP.