Former Secretary of State Hillary Clinton, Vermont Senator Bernie Sanders and former Maryland Governor Martin O’Malley faced off Saturday in the third Democratic presidential debate. The candidates met just one day after the Sanders campaign sued the Democratic National Committee for blocking access to key voter data files. The DNC took action after a Sanders campaign staffer improperly viewed Clinton’s voter files, taking advantage of a glitch in the system. The Sanders campaign fired the staffer involved, and the DNC has restored access to the files. Sanders apologized for the breach during Saturday’s debate, which focused largely on foreign policy. Clinton and Sanders sparred over the role of the U.S. military.

Sen. Bernie Sanders: “The United States must lead, but the United States is not the policeman of the world. The United States must not be involved in perpetual warfare in the Middle East. The United States at the same time cannot successfully fight Assad and ISIS. ISIS now is the major priority.”

Hillary Clinton: “If the United States does not lead, there is not another leader, there is a vacuum. And we have to lead, if we’re going to be successful.”