"Mr. Trump is so stupid, my God," Paris Mayor Anne Hidalgo, standing next to new London Mayor Sadiq Khan, said this week when asked about Trump's proposal to ban Muslims from entering the United States.

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Khan, London's first Muslim mayor, has been criticizing Trump for days over the New York billionaire's idea, saying it would prevent him from visiting the U.S.
 
Trump indicated Monday he could provide an exception for the mayor, which Khan dismissed, saying it's not "just about me" and blasting Trump for having "ignorant" views of Islam.
 
Trump announced his plan for the temporary ban in December amid increased fears of terrorism, though has stood by his proposal in recent days since becoming the GOP's presumptive nominee.