ປ.ຢູເຄຣນ ຢ້ຽມຢາມ ສຫລ

President Petro Poroshenko, escorted by House Majority Leader Kevin McCarthy, R-Calif., is welcomed by U.S. lawmakers as he arrives to address a joint meeting of Congress, at the Capitol in Washington, Sept. 18, 2014.

Ukraine President Petro Poroshenko pauses while addressing a joint meeting of Congress in the U.S. Capitol in Washington, Sept. 18, 2014.

A Ukrainian serviceman stands at a checkpoint near the town of Horlivka in eastern Ukraine, Sept. 18, 2014.

Ukrainian servicemen inspect cars at a checkpoint near the town of Horlivka in eastern Ukraine, Sept. 18, 2014.

A Ukrainian army soldier holds an amulet given to him by an unknown child, Debaltsevo, Donetsk's region, Ukraine, Sept. 18, 2014.

Rebel commander Alexander Khodakovsky of the pro-Russian Vostok Battalion says hundreds of Russian volunteers are supporting separatists in eastern Ukraine, offering them vital experience in battle tactics and training to attack Ukrainian forces, in Donetsk, Sept. 17, 2014.