But it's likely the missile strikes close to Damascus, Syria's capital, came from the Israeli military, which has been on high alert after reporting "irregular activity of Iranian forces" in Syria.
At least 15 people, including eight Iranians, died in missile strikes carried out by Israel in Syria, the London-based Syrian Observatory for Human Rights said.
Found a spelling error? The incoming attack set off air raid sirens in the Israeli-controlled Golan, which was captured from Syria in the 1967 Mideast war. Israel is determined to take action against Hezbollah since Iran, allegedly, intends to build a military base near the disputed Golan Heights and has been building facilities to manufacture weapons inside Lebanon.
Trump and his allies in the Middle East, particularly Israel, argue the agreement was too weak and needs to be replaced with a more permanent arrangement supplemented by controls on Iran's missile programme.
"They need to remember the saying that if it rains on us, it'll storm on them".
Russia's foreign ministry said on Tuesday it was "deeply disappointed" by Trump's announcement that the United States would pull out of the Iran deal, while Netanyahu strongly supported the U.S. president's "bold" move.
Syrian air defences, which fired dozens of times on Israeli forces, were also targeted, he said.
Opposition figure and former Syrian brigadier Assad al Zogbi said however that the operation was limited to strikes on military targets only and ruled out an all-out war.
Netanyahu's visit on Wednesday is his first trip to Russian Federation since the strikes and his appearance at the parade adds a symbolic element to the meeting, Micky Aharonson, former foreign relations head at the Israeli prime minister's National Security Council, said.
The military said it is prepared for "various scenarios" and warned "any aggression against Israel will be met with a severe response". One TV station, Beirut-based Al-Mayadeen, said at least 50 missiles were fired from Syria at Israeli forces in the Golan Heights.
It is also noted that according to the press Secretary of army of defence of Israel, tel Aviv is considering the incident as an "Iranian attack". Iran does not [want] war, [the] United States does not [want] war, Israel of course does not [want] war.
"Israel fully supports President Trump's bold decision today to reject the disastrous nuclear deal with the terrorist regime in Tehran", Netanyahu said in a televised address.
Netanyahu before leaving Israel for the visit said that "the meetings between us are always important and this one is especially so".
"I very much appreciate the opportunity you have spoken about, to discuss with you and to think together about how we can act correctly in the region, how we can lift the threats that exist in the region in a responsible and reasonable manner", Netanyahu said.
Asked about those statements, an Israeli military spokeswoman said: "We do not respond to such foreign reports".