The leadership of the most powerful pro-Israel lobby in the U.S. publicly broke Sunday from the White House over the issue of Iran policy during the first of a three-day policy conference in Washington attended by 16,000 of its members.

Leaders of the American Israel Public Affairs Committee, or Aipac, outlined a strategy moving forward of working through Congress to disrupt any nuclear agreement with Tehran that is deemed too weak in denying the country a nuclear weapons capability.

This would be achieved, they said, both by seeking to impose new sanctions on Iran and to block the White House’s ability to lift standing U.S. sanctions, which would be required as part of any comprehensive agreement ..

– Read more: Pro-Israel Group Publicly Breaks With White House Over Iran – The Wall Street Journal