Jerusalem (CNN) Iran vowed to retaliate for the recent attack on a military base in Syria, blaming Israel for the strike. Speaking in Damascus at a two-day conference on Jerusalem Tuesday, a senior advisor to Iran's Ayatollah Ali Khamenei, Ali Akbar Velayati, told Iran' state-run Islamic Republic News Agency (IRNA) that Israel's "crimes will not remain unanswered."

"The Israeli regime's aggression against Syria is a breach of this country's national sovereignty and territorial integrity and runs counter to all international regulations and principles," Iranian Foreign Ministry Spokesman Bahram Qassemi said on Monday, according to Press TV.

Israel has neither confirmed nor denied the strike, but Russia claims Israel Was responsible for carrying out the attack, which targeted the T-4 airbase near Homs. Syria, Iran, and Lebanon have also blamed Israel for the attack, which Russia said was initiated by F-15 fighter jets firing missiles from Lebanese airspace.

The strike resulted in the killing of "some Iranian military advisers," according to IRNA. The semi-official FARS news agency said 4 Iranians had been killed.

"The Zionist regime is [looking for] increased tensions in the region and I think that all involved sides should be extremely vigilant towards this issue," said Deputy Iranian Foreign Minister Seyed Abbas Araqchi to Russia Today on Tuesday, according to FARS.

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