WASHINGTON—The owner of the Atlanta Jewish Times apologized for an opinion column in which he counted President Obama’s assassination as among Israel’s options in heading off a nuclear Iran.

“I very much regret it, I wish I hadn’t made reference to it at all,” Andrew Adler told JTA on Friday.

He said he would publish an apology in his next edition, and that reaction from readers had been overwhelmingly negative.

In a Jan. 13 column, Adler, who is also the paper’s publisher, outlined what he said were three possible responses by Israel to Iran’s acquiring a nuclear weapon: A preemptive strike against Hamas and Hezbollah, terrorist groups that he said would be emboldened by a nuclear Iran; a direct strike on Iran; and “three, give the go-ahead for U.S.-based Mossad agents to take out a president deemed unfriendly to Israel in order for the current vice president to take his place, and forcefully dictate that the United States policy includes its helping the Jewish state obliterate its enemies.”

He continued: “Yes you read ‘three’ correctly. Order a hit on a president in order to preserve Israel’s existence. Think about it. If I have thought of this Tom Clancy-type scenario, don’t you think that this almost unfathomable idea has been discussed in Israel’s most inner circles?”

Gawker, the gossip and political website, first reported on the column.

In his column, Adler described Obama’s Iran policy as an “Alice in Wonderland” belief that diplomacy with Iran will prevent it from going nuclear.