Trump returned from Asia with trade deals with China and South Korea in his pocket but also threatening the resumption of nuclear weapons testing.

Donald Trump and South Korean President Lee Jae Myung finalized details of their fraught trade deal at a summit in South Korea on Wednesday.

Trump returned from Asia with trade deals with China and South Korea in his pocket but also threatening the resumption of nuclear weapons testing.

His five-day tour displayed the power of his presidency - but also, at times, that power's limitations.

Uncertainty surrounds the signing of this week’s trade deals amid the failure to secure reciprocity from the US to cut tariffs