Russia\'s chief of foreign affairs called on countries preparing the possible Syria peace conference to play fair and abstain from double standards. Foreign Minister Sergei Lavrov said that he saw \"no way out, other than calling a conference\", but stressed \"we need to make sure everyone is playing fair and doesn\'t relapse in double standards\". He said it was inadmissible to talk in favor of a peace conference, to support this initiative, while at the same time taking \"steps to sabotage this move\", the Voice of Russia reported.