Palestinian children play soccer next to ruins of houses destroyed during Israel’s three-week offensive in Gaza earlier this year, in Jabaliya, northern Gaza Strip, Monday, June 1, 2009. U.N. investigators on Monday began looking into possible war crimes during Israel’s three-week offensive earlier this year against Gaza’s Hamas rulers, even though they failed to secure a promise of cooperation from Israel. Israeli officials have insisted the investigation, led by veteran war crimes prosecutor Richard Goldstone, would not be objective, citing alleged anti-Israel bias by the U.N. agency sponsoring the probe. (AP Photo/Khalil Hamra)