(CNN)President Barack Obama touched on the rancorous U.S. presidential race at a press conference Thursday from the G-7 summit in Japan, saying that presumptive Republican nominee Donald Trump's statements had his fellow world leaders concerned.

"They're rattled by him and for good reason," Obama said. "Because a lot of the proposals that he's made display either ignorance of world affairs or a cavalier attitude or an interest in getting tweets and headlines instead of actually thinking through what is required to keep America safe."

"They are surprised by (Trump), not sure how to take some of his pronouncements," the President added.
Obama said the world is watching the campaign.

"The world pays attention to U.S. elections," Obama said. "They pay more attention to our elections sometimes than we pay to theirs. The U.S. is ... at the heart of the international order and even those countries that are critical of us...know that ultimately things don't hold together so well if the U.S. isn't making good decisions and they count on us to provide stability when making global decisions."