Story highlights President Barack Obama is in Paris speaking at a climate change summit

Republican presidential front-runner Donald Trump slammed Obama's comments regarding climate change

Trump called the U.S. president "naive" and that his comments were some of the "dumbest" he's ever heard

Washington (CNN) Donald Trump said Monday that President Barack Obama's comments that climate change poses one of the greatest threats to the U.S. is one of the "dumbest things" ever said.

The GOP presidential front-runner made the comments at the same time that the President addressed a global summit of leaders on climate change in Paris on Monday morning.

Trump was taking Obama to task for his past remarks that global climate change is one of the greatest threats facing the United States and the world.

"I think one of the dumbest statements I've ever heard in politics -- in the history of politics as I know it, which is pretty good, was Obama's statement that our No. 1 problem is global warming," Trump said Monday on MSNBC's "Morning Joe."

The mogul cited the threat of terror and attacks on the U.S. as more concerning.

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