While the UN climate summit will not deliver binding commitments to cut carbon emissions, real action on climate policy is occurring on the domestic front, says CFR’s Michael Levi.

The United States should cripple the Syrian government’s ability to kill masses of its own people and openly intensify its support to opposition forces, says expert Frederic C. Hof.

President Obama’s cancelled state visit to Moscow next month is another indication that the so-called U.S.-Russia reset has derailed, says CFR’s Stephen Sestanovich.

A clear sign of a new Iranian nuclear posture will be if incoming president Hassan Rowhani pursues bilateral talks with the United States, says former top U.S. arms official Gary Samore.

Moscow and Washington share a number of significant interests that require cooperation, despite heightened bilateral tensions over human rights issues, says former U.S ambassador Jack F. Matlock, Jr.