The United States is offering Russia a new military pact against the Islamic State and al-Qaida in Syria, according to a leaked U.S. proposal.
If finalized, the arrangement could dramatically alter America's role in the Arab country's five-year civil war.
The document published by The Washington Post calls for joint bombing operations, a command-and-control headquarters and other synchronized efforts. U.S. and Russian officials with expertise in intelligence, targeting and air operations will "work together to defeat" the extremist groups, the eight-page paper states.
U.S. Secretary of State John Kerry, who was to discuss the proposal in Russia's capital later Thursday, declined to comment.