US warns military action in fight against caravan of migrants from Central America

U.S. President Donald Trump said on Thursday that he was "bringing out the military" to protect the U.S. border as a caravan of Central American migrants continues through Mexico on their trek to the United States.

"I am bringing out the military for this National Emergency. They will be stopped!" Trump wrote in a post on Twitter. It was not immediately clear what new policy he was referring to.