Continued Israeli “aggression” in Syria will be met with the “toughest” response, a senior Iranian diplomat told Sputnik news agency. Damascus had earlier accused the Israel Defense Forces of conducting airstrikes on Syrian soil.

Ali Asghar Khaji, Foreign Minister Mohammad Javad Zarif’s senior aide for special political affairs, blasted Israel for its “aggressive and hostile” policies in Syria, in an interview published by Sputnik on Sunday.

“While the Syrian government is fighting terrorists, Israel supports them,” he said.

Our presence in Syria is aimed at combating ISIS [Islamic State] and other terrorist groups, but if Israel wants to cross the ‘red lines,’ it will face the toughest response, which will make them regret their actions.

Ashgar said that Iranian forces are operating in Syria at the request of the country’s government and have not been asked to leave. On the other hand, those who are occupying parts of Syria illegally must withdraw, he said.

Syrian officials have been demanding that US and Turkish troops, which were never authorized or invited to operate in the country, leave the border areas they occupy.

Syrian state media reported an Israeli air raid in January, and more airstrikes earlier this month. The IDF did not comment on the recent reports, and it rarely confirms bombing raids in foreign states.

Syria’s SANA news agency reported last month that Damascus had penned a letter urging the UN Security Council to condemn Israeli air raids on its territory.