Defense Secretary Mark Esper says U.S. "will take preemptive actions" in Iraq if it sees preparations for attack
Defense Secretary Mark Esper said that "the game has changed" in Iraq, and he vowed that the U.S. "will take preemptive actions" to knock out rockets or mortars targeting military bases where U.S. troops are also located. His comments came after thousands of demonstrators finally left the U.S. Embassy compound in Iraq following days of violent attacks. CBS News correspondent Ian Lee reports from Baghdad, and CBS News national security correspondent David Martin joined CBSN to discuss.