Why is the West so obsessed with Israel?

With the ongoing conflict in the Gaza strip, it appears that the USA at least, seem prepared to sit back and let Israel carry on with this atrocity without any criticism of what they are doing.

This is not the first time in recent history that Israel has been allowed by the international community to indulge in apparently illegal activities without any repercussions. One recent previous example of this was when they invaded Lebanon back in 2006, oh and there is the small case of illegal possession of nuclear weapons as well

The question that never seems to be asked is why the international community, particularly the USA and Western European nations, seem reluctant to condemn these types of actions and seem unwilling to do anything about them, yet are prepared to call Iran evil and invade Iraq when there actions have far less of an impact than what Israel gets up to.

Don't get me wrong, I know that from a Christian point of view Israel has a very significant part to do with Christian history, put we are called to condemn evil regardless of who happens to be doing it and not to give a country like Israel a free pass just because of their history.