US President Barack Obama criticized Republican presidential candidate Donald Trump on Friday for his recent statements about allies acquiring nuclear weaponry.
Trump had suggested to broadcaster CNN that it might be advantageous for allies like Japan and South Korea to have their own nuclear arsenals, and that he wouldn't rule out using nuclear weapons in Europe.
Without mentioning the billionaire by name, Obama said such comments reflected someone who "doesn't know much about foreign policy, or nuclear policy, or the Korean peninsula or the world generally."
He said that the US policies in the last more than six decades have contributed in large part to the "peace and prosperity" of that region.
"You don't mess with that," Obama said at a press conference at the conclusion of the two-day Nuclear Security Summit in Washington.
Noting that the subject had come up on the sidelines of the 50-nation gathering, Obama said: "People pay attention to American elections."
While other nations are used to a "carnival atmosphere" in their own elections, they want "sobriety and clarity in US elections."