U.S. eyes military cooperation with Russia in Syria

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Under the proposed plan, the U.S. military and Russian Air Force would launch joint airstrikes against the al Qaeda-linked Jabhat al-Nusra, which is primarily fighting regime forces.

In exchange for deepening the military cooperation, Russia would halt its attacks on U.S.-backed rebels and other groups the U.S. does not consider terrorists, and agree to pressure Assad -- a close Russian ally -- to stop them as well.