The Obama administration is reportedly weighing a military attack on Syria following last week's alleged chemical weapons attack near Damascus. The Washington Post reports a U.S. strike on Syria would be of "limited scope and duration, designed to serve as punishment for Syria's use of chemical weapons and as a deterrent, while keeping the U.S. out of deeper involvement," in Syria's civil war. The potential strike would likely last no more than two days, the Washington Post says. The news comes as Secretary of State John Kerry opened the door to potential U.S. military action with a speech in Washington. Kerry said the Syrian regime's use of chemical weapons is "undeniable," and vowed an "informed" U.S. response.