Obama Laughs Off Trump's Proposal to Give South Korea and Japan Nuclear Weapons

Obama said world leaders are expressing concern over the U.S. election.

The president has said in the past that various world leaders have approached him privately with concerns about proposals and the tone put forth by Trump during his campaign.

"It came up on the sidelines, I've said before, that people pay attention to American elections," Obama said. "Even in those countries that are used to a carnival atmosphere in their own politics want sobriety and clarity when it comes to U.S. elections."