Russia's imperial ambitions did not end with the fall of the Soviet Union. The Kremlin has returned to expansionism, trying to recapture great-power status at the expense of its neighbors, warns one of Ukraine's most prominent politicians. The United States and Europe must counter with a strong response -- one that keeps Russia in check without sparking a new Cold War.

The rift between U.S. military and civilian leaders did not start with George W. Bush, but his administration's meddling and disregard for military expertise have made it worse. The new defense secretary must restore a division of labor that gives soldiers authority over tactics and civilians authority over strategy -- or risk discrediting civilian control of the military even further.

Nicolas Sarkozy's Testimony is an unusual work for a French politician in midcampaign: a panegyric to the United States and an unsparing attack on French domestic policy. What kind of a president would Sarkozy be?