President Trump is escalating his attacks against Central American migrant caravans making their way to the U.S.-Mexico border, including warning soldiers could shoot migrants for throwing rocks.

President Donald Trump: “We’re not going to put up with that. If they want to throw rocks at our military, our military fights back. We’re going to consider it. I told them, consider it a rifle. When they throw rocks like they did at the Mexico military and police, I say consider it a rifle.”

Trump has announced he may send as many as 15,000 troops to the border and indefinitely imprison asylum-seeking families in tent cities. This comes as a new Associated Press investigation has revealed that over 56,000 migrants have died or gone missing worldwide over the last four years, as migration has surged by nearly 50 percent since the turn of the century.