Sappers check a building in Semenovka
Sappers check a building in the eastern Ukrainian village of Semenovka, near Sloviansk, July 14, 2014. Ukraine on Monday accused Russian army officers of fighting alongside separatists in the east of the country and said Moscow was once more building up its troops on the joint border. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
Sappers inspect positions once occupied by pro-Russian separatists in Semenovka
Members of the Ukrainian police special task force "Kiev-1" stand guard while sappers (in blue) inspect positions once occupied by pro-Russian separatists in the eastern Ukrainian village of Semenovka, near Sloviansk, July 14, 2014. Ukraine on Monday accused Russian army officers of fighting alongside separatists in the east of the country and said Moscow was once more building up its troops on the joint border. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
A sapper checks a building as a member of the Ukrainian police special task force "Kiev-1" stands guard outside in Semenovka
A sapper (R) checks a building as a member of the Ukrainian police special task force "Kiev-1" stands guard outside in the eastern Ukrainian village of Semenovka, near Sloviansk, July 14, 2014. Ukraine on Monday accused Russian army officers of fighting alongside separatists in the east of the country and said Moscow was once more building up its troops on the joint border. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
A member of the Ukrainian police special task force "Kiev-1" stands beside a local woman in Semenovka
A member of the Ukrainian police special task force "Kiev-1" stands beside a local woman as sappers check her building in the eastern Ukrainian village of Semenovka, near Sloviansk, July 14, 2014. Ukraine on Monday accused Russian army officers of fighting alongside separatists in the east of the country and said Moscow was once more building up its troops on the joint border. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
A member of the Ukrainian police special task force "Kiev-1" patrols in Semenovka
A member of the Ukrainian police special task force "Kiev-1" patrols in the eastern Ukrainian village of Semenovka near Sloviansk, July 14, 2014. Ukraine on Monday accused Russian army officers of fighting alongside separatists in the east of the country and said Moscow was once more building up its troops on the joint border. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY TPX IMAGES OF THE DAY)
A member of the Ukrainian police special task "Kiev-1" patrols in the eastern Ukrainian village of Semenovka near Sloviansk
A member of the Ukrainian police special task "Kiev-1" patrols in the eastern Ukrainian village of Semenovka, near Sloviansk July 14, 2014. Ukraine on Monday accused Russian army officers of fighting alongside separatists in the east of the country and said Moscow was once more building up its troops on the joint border. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
Ukraine says contact lost with military transport plane over rebel area
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