Donald Trump lays out foreign policy vision, vows to put 'America first'

Donald Trump lays out foreign policy vision, vows to put 'America first'

With the general election in his sights, Republican Donald Trump delivered a sober foreign policy address Wednesday aimed at easing fears about his temperament and readiness to be commander in chief. Rival Ted Cruz made a desperate attempt to jolt the GOP race by tapping Carly Fiorina as his running mate.