A foreign policy-minded group launched earlier this year by former Georgia Sen. Saxby Chambliss is airing television advertisements targeting two Democratic lawmakers for refusing to support legislation that would allow for congressional approval of a potential nuclear deal with Iran.

The American Security Initiative, which Chambliss formed in January with fellow ex-Sens. Evan Bayh, Norm Coleman, and Joseph Lieberman, launched this week a pair of ads pressuring two hold-outs on the Senate Foreign Relations Committee to cosponsor legislation to empower Congress to reject or approve a possible Iran deal.

The ads, which feature a work van making its way through a nondescript metro before detonating a nuclear device in a parking deck, are targeting New Hampshire New Hampshire Sen. Jeanne Shaheen and Delaware Sen. Chris Coons.

According to Politico, the group is spending $650,000 between three spots. That figure includes a smaller buy in Virginia, where the group is airing a spot thanking Sen. Tim Kaine for his support.