What Mattered Today: December 30, 2019

One day after the Trump Administration carried out airstrikes in Iraq and Syria, Iran warned that the U.S. "must accept responsibility." Plus, the White House said President Trump and Russian President Putin discussed "the state of relations between" the two countries on Monday, and Democratic presidential candidate Senator Bernie Sanders released letters from three doctors saying he's healthy following a heart attack in October. Read up on these and more of today’s top headlines.

What Mattered Today: December 30, 2019

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