Ukraine’s President Poroshenko shakes hands with a serviceman of Ukrainian National Guard during an opening ceremony of joint military exercise “Fearless Guardian 2015” at the International Peacekeeping Security Center near the village of Starychy

Ukraine’s President Petro Poroshenko (L) shakes hands with a serviceman of Ukrainian National Guard during an opening ceremony of joint military exercise “Fearless Guardian 2015” at the International Peacekeeping Security Center near the village of Starychy western Ukraine, April 20, 2015. REUTERS/Gleb Garanich