Prime Minister Benjamin Netanyahu is scheduled to visit Moscow on Wednesday for talks with Russian President Vladimir Putin amid Middle East tensions.
The Prime Minister's Office said in a statement Saturday that the two leaders will discuss "regional developments."
It said they will meet at the Kremlin after attending a Victory Day parade marking the anniversary of the Soviet Union's victory over Nazi Germany in WWII.
Netanyahu and Putin have met several times to coordinate activities in Syria, where Russia has deployed significant forces to aid Syrian President Bashar Assad in his war against rebels trying to unseat him.
Israel has warned it will not tolerate Iran's efforts to establish itself militarily in neighboring Syria.
Israel has been suspected in several airstrikes on Iranian assets in Syria, though it has not confirmed involvement. Iran has threatened retaliation.
Israel has been lobbying world powers to "fix or nix" a 2015 nuclear deal with Iran, as a May 12 deadline set by U.S. President Donald Trump approaches.
Since intervening in the Syrian civil war on behalf of Assad in 2015, Russia has generally turned a blind eye to Israeli raids on suspected weapon transfers and deployments by its Iranian and Hezbollah allies.
But when Moscow condemned an April 9 strike that killed seven Iranian personnel and blamed Israel, it set off speculation in Israel that Russian patience might be wearing thin.
On Thursday, Defense Minister Avigdor Lieberman reminded Russia of the Israeli government's decision not to join Western sanctions against it, and asked that Moscow reciprocate with a more pro-Israel approach to Syria and Iran.
Netanyahu and Putin spoke by phone on Monday after the Israeli prime minister presented what he said were Iran's secret nuclear files that document its efforts toward developing atomic weapons in the past.
U.S. and Israeli officials said the information showed Iran had lied about its past work to develop nuclear weapons but some intelligence experts said there was no smoking gun showing that Tehran had violated the nuclear deal under which it curbed its atomic program in return for relief from economic sanctions.
On Friday, Netanyahu spoke with Australian Prime Minister Malcom Turnbull, Indian Prime Minister Narendra Modi and British Prime Minister Theresa May to update them on the materials obtained by the Mossad intelligence agency. The conversations followed similar calls Netanyahu held with German Chancellor Angela Merkel and French President Emmanuel Macron last week.
Meanwhile, Defense Minister Avigdor Lieberman commented on the January operation to obtain the Iranian nuclear archives.
In an interview with Channel 13's "Meet the Press" on Saturday, Lieberman said, "Everything we've seen in James Bond movies doesn't come close to reality. What was mainly revealed there, and this is the essence, is that Iran, despite all the denials, including last week, intended to acquire nuclear weapons."
As for the increased security tensions ahead of the relocation of the U.S. Embassy in Israel from Tel Aviv to Jerusalem on May 14, Lieberman said, "There are no free meals. There is a price to pay for national ambition and the realization of a vision." He said Israel would "pay a price" for the move, noting that "that price is worth paying."
Also on Saturday, The Boston Globe reported that former U.S. Secretary of State John Kerry had arrived in New York around two weeks ago to meet with Iranian Foreign Minister Mohammad Javad Zarif, who was in town to attend several meetings at U.N. headquarters.
According to the Boston Globe, Kerry has been on an "aggressive yet stealthy mission" to preserve the deal he helped formulate. The newspaper said Kerry's New York meeting with Zarif was their second in recent months aimed at discussing different ways to preserve the 2015 nuclear accord.
Trump has given Britain, France and Germany a May 12 deadline to fix what he views as the deal's flaws – its failure to address Iran's ballistic missile program, the terms by which inspectors visit suspect Iranian sites, and "sunset" clauses under which some of its terms expire – or he will reimpose U.S. sanctions.
Moscow has repeatedly said it wants the Iran nuclear deal left intact.
Foreign Ministry spokeswoman Maria Zakharova said on Friday Russia would deem any changes to the deal to be unacceptable.
