PBS Newshour: Kerry defends Obama foreign policy, vows not to give up on Middle East peace

Secretary of State John Kerry weighs in on the U.S. response to the crisis in Ukraine, a terror resurgence in North Africa, the long, bloody war in Syria and a Mideast peace process that ground to a halt just a few weeks ago. He joins Gwen Ifill for an extended interview on current foreign policy challenges and why he thinks President Obama doesn’t get sufficient credit for successes.