Guardian: Barack Obama will move to seal a deal with Russia for joint action on climate change during his summit in Moscow next week, the Guardian has learned. Obama arrives in Moscow on Monday at the start of a trip to Russia, Italy and Ghana that will focus heavily on energy and climate change. From Moscow, Obama travels on to Italy for a meeting of the G8 and a gathering of the major polluting countries. Administration officials are still working out the broad outlines of an agreement …