President Obama on Tuesday offered an extended critique of the Republicans running to replace him, describing them as "troubling" to people around the world and singling out Donald J. Trump as someone who would not be a serious president.
Speaking at a news conference in California at the end of a two-day summit meeting with leaders from Southeast Asian nations, Mr. Obama criticized the positions taken by the Republican candidates on climate change, Muslims in America and immigration.
"There is not a single candidate in the Republican primary that thinks we should do anything about climate change, that thinks it's serious," Mr. Obama said. "Well that's a problem. The rest of the world looks at that and says, 'Well, how can that be?'"
The president said Mr. Trump was not the only Republican who raised concerns, but he singled out the real estate mogul as someone who would be singularly unprepared for the responsibilities of the Oval Office.