(For the lazy people who would rather listen to a random stranger on the Internet: Hamas is the political party that current controls the Gaza Strip and is widely recognized to be a terrorist organization. Among other things, the first actions Hamas took after seizing power in the Gaza Strip included killing leaders from other Palestinian political parties. The Egyptian government has repeatedly closed the border with the Gaza Strip in response to Hamas using that border to import rockets and for trying to use Egyptian territory to fire rockets into Israel. The Palestinian Authority in the West Bank has sanctioned Hamas by refusing to pay for various things in the Gaza Strip. Obviously the Israelis have no patience for Hamas, but let's not pretend that this is the typical Zionists-vs-Palestinians dispute.)