MOSCOW, April 15 (SPA) - President Vladimir Putin agreedon Tuesday to lead Russia's biggest political party, a move thatwill bolster his power after he steps down as Kremlin leadernext month, Reuters reported. "I accept the invitation of the party. I am ready to take onmyself the additional responsibility and head the party," Putintold cheering delegates at a United Russia congress in Moscow. Putin has already said he will serve as prime minister oncehis protege, Dmitry Medvedev, is sworn in as president on May 7.--SPA www.spa.gov.sa/546392