The President of Chechnya is assassinated in a bombing in the capital: As many as 13 others were killed, two officials there said, while more than 50 were reported injured, including the Russian military commander for the region. Akhmad Kadyrov, a former rebel leader elected the republic's president last fall in a vote widely considered fraudulent, was the political figure Mr. Putin entrusted and empowered to wind down nearly a decade of war in Chechnya. His death now plunges the Kremlin's strategy into ominous uncertainty. The explosion, reportedly caused by a bomb planted inside a concrete pillar, occurred at 10:35 a.m. as Mr. Kadyrov and other Russian and Chechen leaders attended a parade and concert in Grozny commemorating the 59th anniversary of the victory over Nazi Germany.