President Vladimir Putin has failed to deliver a coherent response to Russia’s economic challenges while continuing to feed concerns about his intentions in Ukraine, says CFR’s Stephen Sestanovich.

With air strikes now underway in two countries, Washington must pursue a sustained campaign against ISIS militants, with initial emphasis on routing them in Iraq, says expert Ryan Crocker.

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 partner with Iran and Russia in countering Sunni jihadists, the top strategic threat in both Iraq and Syria at the moment, says CFR President Emeritus Leslie H. Gelb.

The surprise resignation of Pope Benedict XVI has given rise to speculations that the next pontiff to lead the Catholic Church will hail from the developing world, says expert James P. McCartin.