Israeli Prime Minister Benjamin Netanyahu is working to win from Donald Trump what he failed to wring from Barack Obama: a harder line against Iran.

Aides to Netanyahu say the two men plan to meet in the first half of next year, probably by March, and the Israeli leader is already huddling with national security advisers to formulate a strategy. While the goal may stop short of trying to kill the multilateral nuclear deal, Netanyahu is expected to tell Trump that the U.S. needs to take a harder line against Iran's military program and lead a more concerted global effort to keep the Islamic Republic's regional aspirations in check, a senior Israeli official said.

That may include stronger retaliation and sanctions against Iranian ballistic missile development and greater efforts to block Iran's growing clout in the region via proxies in Syria, Lebanon and the Gaza Strip, the official said.

"The urgent task is to stop Iran from becoming a superpower in the region, something that has been occurring for some time now," said retired Major General Yaakov Amidror, Netanyahu's former national security adviser. "The prime minister will argue, first and foremost, that the U.S. should work to diminish the partnership between Russia and Iran in the region."

Congress Speech

No other world leader fought harder against a nuclear deal with Iran than Netanyahu, who clashed publicly with Obama and denounced it in a speech to Congress that wasn't coordinated with the White House. While Trump has offered conflicting scenarios on how he'll approach the accord -- in a March 21 speech he said he'd both scrap it and improve it -- he's doesn't like it, and in him, Netanyahu will find a more sympathetic ear.

A key Israeli effort in the post-Obama era will be to persuade Trump to see Iran's role in the region differently, according to Robert Satloff, executive director of the Washington Institute for Near East Policy. While Obama sought to engage Iran and entice it to end its isolation through an accord that traded economic benefits for limits to its nuclear program, Israel wants Trump to reset America's view of Iran, to see it as a major promoter of regional instability that must be contained.

"The first request will be for Trump to see Iran as part of the problem rather than as part of the solution in the region," said Satloff. "The argument will be to work hand in hand with Israel on tightening the noose around Iran rather than sever the deal and open up a Pandora's box between America and global powers, freeing Iran from whatever constraints that currently exist."

Nearly Impossible

Although Netanyahu still adamantly opposes the deal, and will criticize it when he speaks with Trump, he isn't likely to press for its dismantlement because that would allow Iran to shirk its duties under the deal's terms, according to a person familiar with the matter.

Even if Trump did tear up the agreement, it would be nearly impossible for him to persuade other world powers to reapply sanctions and stop trading with Iran if the U.S. were to engineer the deal's cancellation, said Satloff. A U.S. decision to back out of the deal would almost certainly embolden Iran's hardliners, he said.

But while there is disagreement in Israel about whether the deal should be dismantled, much of the security establishment sees a need to at least revisit key provisions.

"Iran is clearly marching towards the bomb, and the deal basically allows them to do so, so what you want is to renegotiate the deal," said Yossi Kuperwasser, a former director of the Israeli Ministry of Strategic Affairs. "There needs to be a clear signal that the world won't put up with that."