MOSCOW, July 25. /TASS/. If Donald Trump is elected US President, "a window of possibilities" may open in the relations between Washington and Moscow, chairman of Russian Federation Council’s International Affairs Committee Konstantin Kosachev said in an interview published in the Izvestiya newspaper on Monday.

"I will not try to forecast the future of Russian-US relations if Trump wins. I will only say that a certain window of possibilities will definitely appear," Kosachev said. "It will depend on many factors that are not clear yet" whether Washington and Moscow will be able to use it, he added. "This is an equation with too many unknown indicators," he noted.

"Trump is unpredictable," Kosachev said adding that "there can be both positive and negative developments." He noted that if Trump is elected "the world will have to deal with the leader who changes his decisions often and drastically."