A new ad campaign in support of President Barack Obama’s Iran nuclear deal will begin airing this week in Hawaii, part of a $5 million national campaign to sway lawmakers into backing the agreement.

The 30-second ad from J Street, a left-leaning Jewish group that describes itself as pro-Israel, is the latest entrant into an escalating battle being waged over Hawaii’s airwaves.

It cites retired Israeli major-generals saying this agreement is “the best existing option,” “the best possible alternative” and that it “must not be rejected.”

“This deal prevents Iran from producing a nuclear weapon,” the ad says. “That’s good for Israel, good for America and makes both countries safer and more secure.”

According to the Federal Communications Commission, J Street paid about $9,900 to KGMB, $4,700 to KHNL, $6,700 to KHON and $7,400 to KITV for the campaign, which began airing Tuesday and runs until Sunday.

Last month, a group called Citizens for a Nuclear Free Iran, which is backed by the powerful pro-Israel lobby American Israel Public Affairs Committee, poured at least $76,000 into a three-week ad blitz in Hawaii to oppose the nuclear accord negotiated between six countries and Iran.

Congress has until Sept. 17 to decide whether to approve or reject the agreement. So far, the only member of Hawaii’s congressional delegation to take a stand on the deal is U.S. Sen. Brian Schatz, who announced his support for it on Monday.

“After multiple readings, numerous briefings with officials, discussions with experts outside of government, consultations with my constituents and my colleagues, I am satisfied that the Joint Comprehensive Plan of Action is the best approach to deny Iran a nuclear weapon and place its nuclear program under strict international supervision,” Schatz said in a statement.