British Prime Minister David Cameron welcomed Russian President Vladimir Putin to Downing Street on Thursday (August 2).<br/> <br />Black belt Russian President Vladimir Putin will lock horns with British leader David Cameron over Syria and human rights during a day of judo diplomacy at the Olympics on Thursday at a time when relations between their two nations are strained.<br/> <br />Cameron will push the former KGB spy to take a tougher line on Syria, Russia's firmest foothold in the Middle East, and stop blocking Western-backed resolutions aimed at stepping up pressure on President Bashar al-Assad.<br/> <br />He is also expected to raise concerns about what Putin critics see as an intensifying Kremlin campaign to silence dissent and discredit Russia's opposition movement.<br/> <br />Later in the day, Cameron is expected to take Putin, the honorary president of the International Judo Federation, to an Olympic arena to watch judo finals together<br/> <br />system.scripts.