Thank you for bringing up the Gaza tunnels jambalaya, because it's worth remembering what the people of Gaza have to do to get round the Israeli blockade of Gaza - illegal under international law.
There is absolutely nothing illegal about closing your border. The Egyptians closed their border with Gaza yeas ago as they where fed up with the smuggling to arms and drugs.
@duckman, you are correct it is tough living in an Arab village in Israel. As @neilwheel says you must put yourself in the shoes of the Israeli's, they are indeed fed up with being attacked (450 rockets fired before July this year) and fed up with terrorists using tunnels to attack them in Israel.
Hamas uses it's civilians as part of its strategy, it digs tunnels from their houses (and has spend years and approx $100m doing so) and from mosques and it tells its people to remain in their houses when they are aware they will be targets (eg when family members are Hamas members). Hamas stores weapons in UN buildings. More civilian deaths is to Hamas's advantage in the media and propoganda war so it does nothing to mitigate them.
Hamas has brought much suffering to Gaza, life in Gaza was far better before they were elected in 2006 (I think that's the right date), the Israel's had left and the boarder was open. Hamas lost support of Syria when it sided with the fight against the government (and as I have posted many times far more Palestinians have been killed in that conflict) and the Egyptians cut ties as they don't want to associate with a terrorist organisation.
@Stratosphere - there is a very clear end game from the Israeli's perspective. Hamas should disarm and renounce violence. I am sure the Israeli's would be happy to have Gaza policed by a substantial UN peacekeeping force. But it would need to be substantial in order to ensure the militant factions within Gaza could be kept under control.
The UN could, theoretically, vote to send in a material peacekeeping force. But they have no stomach for it, the cost and danger of the operation would be significant. They saw in Rawanda and Serbia how if you don't send in material forces it will not work. Also those forces would most likely have to be dominated by US and EU forces and Hamas will never agree to that.
I repeatedly draw reference to other conflicts as it puts what is happening in Gaza, which is indeed terrible, into a some sort perspective. What has happened in Syria, and indeed is ongoing, is far worse in terms of the death of civilians and more significant globally. "Rebel" groups have tried to force a revolution against the government (and Hamas was one of those) and the conflict has lead to the emergence of ISIS and the capture of large parts of Iraq in a Sunni vs Shia inter Muslim sectarian war. This organisation is already a major threat to the West, to us. This threat is only going to grow. By supporting Hamas against the Israel's people are empowering terrorist organisations on a much wider scale.