AT THIS POINT, NEVILLE CHAMBERLAIN IS A BEST-CASE SCENARIO: Rabbi warns Obama against appeasing Iran.

Rabbi Shmuley Boteach, a television host, author and political aspirant, will publish a full-page advertisement in The Washington Post on Tuesday urging President Obama not to “appease” Iran by signing a nuclear agreement.

The advertisement says Obama should be compared to former British Prime Minister Neville Chamberlain if he signs an Iranian nuclear deal with a one-year “breakout” period.

Chamberlain signed an agreement to allow Nazi Germany to annex parts of Czechoslovakia in 1938, one year before it invaded Poland. Negotiators in the Iran talks are working on a deal meant to prevent Iran from getting a nuclear weapon for at least one year if it pulls out of a deal.

“Do not sign a deal that allows the potentially catastrophic one-year-weapons-breakout period, which endangers the Middle East, America, and the world,” the ad reads.

The ad comes on the day of a deadline for the United States and five other world powers to reach an agreement with Iran to curb its nuclear program in exchange for sanctions relief.

Bad deal.