The American-Israeli Public Affairs Committee (AIPAC), the most powerful pro-Israel lobby in the US, is holding its biggest annual conference yet with around 13,000 delegates in Washington.
For all those bidding to become the next US president, it has become an essential campaign stop. The group has strong ties to the religious right and evangelical voters. And it is a very influential force in Washington politics.
Demonstrators from the occupy movement held a small protest outside the event urging no war on Iran and no US tax dollars for Israel.