Writers : North Korea , Pakistan and U.S. missile tests bring up dangers of nuclear war . Study shows war using 100 of 1 % of global nuke arsenals would set off world famine . ( CNN ) -- U.S. and Russia have huge nuclear arsenals , they say , a lethal holdover from the Cold War . It 's urgent for talks about reducing arsenals , they write , with a ban on weapons the goal .
Writers : North Korea , Pakistan and U.S. missile tests bring up dangers of nuclear war . Study shows war using 100 of 1 % of global nuke arsenals would set off world famine . U.S. and Russia have huge nuclear arsenals , they say , a lethal holdover from the Cold War . It 's urgent for talks about reducing arsenals , they write , with a ban on weapons the goal .