At the United Nations, signatories to the Iran nuclear agreement sought Thursday to shore up the landmark deal, after President Trump suggested he was seeking to renegotiate the deal or withdraw the U.S. entirely. This is German Foreign Minister Sigmar Gabriel.

Sigmar Gabriel: “How are we going to convince countries like North Korea that international agreements provide them with security and, in so doing, make them commit to further disarmament efforts, if the only international example for such an endeavor being successful—the agreement with Iran—no longer has effect?”