Trump news at a glance: president says not letting Iran have nuclear weapon ‘only thing that matters’

President's remarks come as midterm elections looks to be defined by economic concerns sparked by the conflict. Key US politics stories from Wednesday 13 May at a glance

Donald Trump has said preventing Iran obtaining a nuclear weapon is the only thing that matters" as the US midterm election campaign season looks to be defined by mounting economic concerns sparked by the conflict.

I think about one thing: we cannot let Iran have a nuclear weapon. That's all," the US president told reporters at the White House before boarding a plane to China.