Alex Altman and Zeke Miller writing for Time's Swampland:

In 2007, Barack Obama was asked when Presidents have the authority to launch a military strike without congressional authorization. He had a precise answer at the ready. “The President does not have power under the Constitution to unilaterally authorize a military attack in a situation that does not involve stopping an actual or imminent threat,” Obama told the Boston Globe. While I fully support this President's actions with regards to social policy, I am continually disappointed by his firm Republicans beliefs when it comes to national security, civil liberties and foreign policy.