Risk of nuclear war now highest since WW2, U.N. arms research chief says

GENEVA (Reuters) - The risk of nuclear weapons being used is at its highest since World War Two, a senior U.N. security expert said on Tuesday, calling it an "urgent" issue that the world should take more seriously.

Renata Dwan, director of the U.N. Institute for Disarmament Research (UNIDIR), said all states with nuclear weapons have nuclear modernisation programmes underway and the arms control landscape is changing, partly due to strategic competition between China and the United States.