Hamas calls the UN to speed up the reconstruction of Gaza Khalil al-Hayya, a senior Hamas leader warned the United Nations on Friday of the consequences of the delay in the reconstruction of the Gaza Strip and accused it of slowing down the lift of the siege on the Gaza Strip. The Palestinian government says rebuilding the battered territory, which has experienced three wars in just six years, will cost around 4 billion dollars (3.3 billion euros). IMAGES AND SOUNDBITES