Ahead of second summit, U.S. Secretary of State Pompeo reaches Hanoi

U.S. Secretary of State Mike Pompeo arrived in the Vietnamese capital, Hanoi, on Tuesday ahead of a second summit between President Donald Trump and North Korean leader Kim Jong Un, a reporter travelling with Pompeo said.

Pompeo has been Trump's top envoy in his efforts to improve ties with reclusive North Korea and has made several trips to Pyongyang to negotiate steps towards ending the North's nuclear programme.