The US and its allies patrol the seas, looking to stop proliferation of nuclear technology and to enforce sanctions against rogue nations, especially on arms trafficking. In the case of the latter, one of its allies clearly needs a little more work in preventing trafficking — on their own ships: US troops boarded a German-owned freighter in early October and found eight containers full of ammunition, allegedly headed to Syria from Iran. The shipment is in violation of a UN weapons embargo and has become a source of chagrin in Berlin.