A new press release from United Against Nuclear Iran (UANI), one of the many Sheldon Adelson-funded lobbying groups trying to kill the Iran nuclear deal, hyped the appointment of former Sen. Joe Lieberman to an unspecified “leadership role” in the group. Lieberman has recently been appointed to key roles at a number of these lobbies.

Buried within the release, however, is a much more interesting story. UANI’s President Gary Samore, who has served in that role since September 2013, has announced his resignation from the post, because while UANI is lobbying against the deal, Samore supports it.

Samore argued that he believes UANI should transition into a role supportive of the deal and monitoring implementation of it. That was clearly a no-go position for anything Adelson-linked, however, as the casino billionaire has been trying to foment war with Iran for years.

There are deep pockets behind the anti-Iran lobby right now, but Samore’s resignation underscores what could be a growing struggle for them. As the deal becomes more and more a matter of fact, there will be fewer people, apart from Joe Lieberman of course, willing to tilt at this particular windmill.