WASHINGTON, DC - MARCH 01: U.S. President Donald Trump participates in a meeting with leaders of the steel industry at the White House March 1, 2018 in Washington, DC. Trump announced planned tariffs on imported steel and aluminum during the meeting, with details to be released at a later date. (Photo by Win McNamee/Getty Images)

More evidence emerged over the weekend that President Donald Trump is governing based on what he watches on Fox News, and he may start another war because of it.

Late Sunday afternoon, Trump - seemingly out of the blue - issued an unambiguous warning to Iran on Twitter:

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