Hamas militants stage the mock kidnapping of a man pretending to be an Israeli soldier during a rally in Gaza City marking the 21st anniversary of the Islamist movement's creation on December 14, 2008. Tens of thousands of Hamas supporters massed in Gaza City today to mark the occasion. In an address to the crowds, Ismail Haniya, the head of the Hamas administration in Gaza, boasted that US President George W. Bush's administration had failed to defeat his movement, which had only grown stronger.