Petro Poroshenko

Ukraine.JPEG-0cf7e.jpg

Ukrainian President Petro Poroshenko, left, inspects military armored personnel carriers during his visit to the State Border Guard Service in Kiev, Ukraine, Saturday, Feb. 14, 2015. (AP Photo/Sergei Chuzavkov)

2_122015_aptopix-belarus-ukraine-28201.jpg

Ukrainian President Petro Poroshenko and the leaders of Russia, Ukraine, France and Germany on Thursday emerged from marathon 16-hour talks to announce a comprehensive peace deal for eastern Ukraine. (Associated Press)

Obama.JPEG-0defc.jpg

President Barack Obama, right, meets with Ukrainian President Petro Poroshenko in the Oval Office of the White House on Sept. 18, 2014. (Associated Press) **FILE**

Ukraine.JPEG-00b30.jpg

Ukrainian President Petro Poroshenko pauses as he attends a news conference in the southern coastal town of Mariupol, Ukraine, Monday, Sept. 8, 2014. Poroshenko made a surprise trip Monday to a key city in southeastern Ukraine as a cease-fire between Russian-backed rebels and Ukrainian troops appeared to be largely holding. (AP Photo/Sergei Grits)

9_4_2014_aptopix-britain-obama-nato8201.jpg

alliance: U.S. President Barack Obama and Ukraine President Petro Poroshenko at the NATO summit at Celtic Manor in Newport, Wales, where they and other world leaders discussed Russian aggression. (Associated Press)

20140723-national-news-cover.jpg

National Edition News cover for July 23, 2014 - U.S. to rebuild Ukrainian military: In this photo taken on Friday, June 20, 2014 in Izyum close to Slovyansk, eastern Ukraine, Ukrainian President Petro Poroshenko visits troops. Poroshenko in a televised address early Tuesday, July 1, 2014, said he was abandoning a unilateral cease-fire in the conflict with pro-Russian separatists and sending military forces back on the offensive after talks with Russia and European leaders failed to start a broader peace process. The cease-fire expired at 10 p.m. Monday.(AP Photo/Mykhailo Markiv, Pool)

7_212014_ukraine-plane-418201.jpg

Kees Klompenhouwer (left), the Dutch ambassador to Ukraine, joined Ukrainian President Petro Poroshenko outside the Dutch Embassy in Kiev on Monday to pay tribute to the 198 people who were killed Thursday in the crash of Malaysia Airlines Flight 17. (Associated Press photographs)

Ukraine.JPEG-00973.jpg

Ukrainian presidential candidate Petro Poroshenko, left, and Vitali Klitschko, pause, during a press conference, in Kiev, Ukraine, Monday, May 26, 2014. (AP Photo/Efrem Lukatsky)