Three boys look at the remnant shells used in the Israeli military operation on the Gaza Strip, in Gaza City, December 28, 2009. Palestinians in the Hamas-ruled Gaza Strip marked the first anniversary of Israel's three-week-long offensive in Gaza started from December 27, 2008. [Xinhua]

A member of Hamas security forces walks over the rubble of their main compound destroyed during the Israel's military operation one year ago, in Gaza City, December 28, 2009. Palestinians in the Hamas-ruled Gaza Strip marked the first anniversary of Israel's three-week-long offensive in Gaza started from December 27, 2008. [Xinhua]