Ukraine's President Petro Poroshenko, right, walks with Romanian President Klaus Iohannis by an honor guard during the welcoming ceremony at the Cotroceni Palace in Bucharest, Romania, Thursday, April 21, 2016. Poroshenko said sanctions on Russia must stay in place as long as hostilities in eastern Ukraine continue during talks that focused on security with his Romanian counterpart Iohannis. (AP Photo/Vadim Ghirda)
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