Ukraine's President Petro Poroshenko (L) and Georgia's President Giorgi Margvelashvili (R) place candles during a memorial rally to commemorate people who were killed during the uprising on Maidan square a year ago, in Kiev

Ukraine's President Petro Poroshenko (C) holds a candle with local and foreign politicians during a memorial rally to commemorate people who were killed during the uprising on Maidan square a year ago, in Kiev

Candles are placed during a memorial rally at Kiev's Maidan square to commemorate people who were killed during the uprising a year ago

Ukraine's President Petro Poroshenko (C), with local and foreign politicians, hold candles during a memorial rally to commemorate people who were killed during the uprising on Maidan square a year ago, in Kiev