ERBIL, Kurdistan Region of Iraq – The Iranian foreign ministry on Saturday said that Tehran’s decision to participate in the next round of nuclear talks with Washington, initially scheduled for Sunday, remains unclear, accusing the US of greenlighting the Israeli attack on Iran.

Tensions have escalated between Iran and Israel over the past two days, after Israel launched a large-scale aerial campaign against Iran, targeting military bases and nuclear facilities and killing dozens of top Iranian officials and commanders. Iran responded with a barrage of ballistic missiles and drones later in the evening, targeting Tel Aviv and other parts of Israel.

Esmail Baghaei, spokesperson for the Iranian foreign ministry, on Saturday said that it is “unimaginable” that Israel would have launched the strikes without the “cooperation, coordination, or at least the conscious green light of America.”

“It is still unclear what decision we will make in this regard on Sunday,” Baghaei noted in regard to the scheduled nuclear talks.

The US has denied involvement in the Israeli attacks but has voiced support for Israel’s right to defend itself and assisted the Israeli military in intercepting Iranian projectiles.

“The Zionist regime's constant desire was to drag Western countries into conflict and entanglement in the region. It seems that it has succeeded this time as well and has somehow influenced a diplomatic process with this adventure. This actually shows that American policymakers are still heavily influenced by this regime,” Baghaei added.

Iranian Foreign Minister Abbas Araghchi said on Saturday that “continuing negotiations between Iran and the US in a situation where the barbarity of the Zionist regime continues is unjustifiable,” according to Iran’s semi-official Fars News, adding that they consider the Israeli attacks on their soil as the result of direct US support.

US President Donald Trump on Friday urged Tehran to reach a nuclear accord ahead of “even more brutal” attacks.

A sixth round of nuclear talks between Washington and Tehran was pegged for Sunday, with Alaeddin Boroujerdi, a member of the Iranian Parliament, saying that the upcoming negotiations have been canceled and that he does not think that “any other round of talks will take place” in light of the attack.

Updated with Iranian FM's statement at 5:05 pm.