A Palestinian Hamas policeman gestures in front of portraits of late Fatah leader Yasser Arafat (L) and jailed Fatah leader Marwan Barghuti, in Gaza City on June 15, 2009. In the two years since Hamas seized power in Gaza, the territory's residents have endured crippling economic sanctions and a devastating war with Israel, but the Islamist group's grip on power is as tight as ever.