John Christensen, right, a senior Sgt. in the Danish army and his colleague, both members of a group of foreign military observers are escorted by a pro-Russian militant to attend a press conference in the city hall of Slovyansk, eastern Ukraine, Sunday, April 27, 2014. As Western governments vowed to impose more sanctions against Russia and its supporters in eastern Ukraine, a group of foreign military observers remained in captivity Saturday accused of being NATO spies by a pro-Russian insurgency. The German-led, eight-member team was traveling under the auspices of the Organization of Security and Cooperation in Europe when they were detained Friday. (AP Photo/Alexander Zemlianichenko)