Russia and the United States: Pushing Tensions to the Limit?

As Russia and the United States prepare for their respective presidential elections, tensions between the countries are growing. The central point of contention is U.S. ballistic missile defense (BMD) plans. Russia has several levers, including its ability to cut off supply lines to the NATO-led war effort in Afghanistan, to use in the standoff over BMD, but the United States could retaliate by supporting the current protests in Russia. Moscow is willing to escalate tensions with Washington but will not push the crisis to the point where relations could formally break.