UN chief 'concerned' by cancellation of US-N. Korea summit

GENEVA – The UN chief said Thursday he is "deeply concerned" by the cancellation of the planned summit between US President Donald Trump and North Korean Leader Kim Jong Un.

Antonio Guterres told an audience at the University of Geneva that he was urging the parties to keep working "to find a path to the peaceful and verifiable denuclearization of the Korean Peninsula."

Guterres' comments came as he laid out his disarmament agenda Thursday, warning that nuclear agreements between states are threatened like never before.

He said nuclear powers must do more to promote disarmament, putting a particular onus on Russia and the United States to remedy a world "going backwards" in this area since right after the Cold War.