Donald Trump doesn’t know much about foreign policy: Barack Obama

US President Barack Obama has questioned Republican Presidential candidate Donald Trump’s foreign policy credentials, saying he doesn’t “know much” about the world.

“The person who made the statements doesn’t know much about foreign policy or nuclear policy or the Korean Peninsula or the world generally,” Mr Obama said on Friday.

“I’ve said before that people pay attention to American elections. What we do is really important to the rest of the world. Even in those countries that are used to a carnival atmosphere in their own politics, want sobriety and clarity when it comes to US elections,” Mr Obama said.

“They understand President of the United States needs to know what’s going on around the world and has to put in place the kinds of policies that lead not only to our security and prosperity, but will have an impact on everybody else’s security and prosperity,” he added.

Earlier, Mr Trump had favoured countries like Japan and South Korea developing their own nuclear weapons capabilities to defend themselves rather than the US protecting them.

Mr Trump is facing pressure to adopt a more presidential tone in his White House run from Republicans too, who worry his missteps may do irreparable harm to the party and his campaign.