TOPSHOTS Maidan self-defence activists guard the Ukrainian Parliament in Kiev during a session, on April 15, 2014, as protesters outside the building demand authorities to take actions against separatism on the eastern part of the country. Russian Foreign Minister Sergei Lavrov on Tuesday warned Kiev against using force to quell pro-Moscow separatists in eastern Ukraine, saying the "criminal" act would undermine talks planned in Geneva. AFP PHOTO/ SERGEI SUPINSKY