Iran’s foreign minister again has referenced his country’s planned retaliation over the assassination of Hamas leader Ismail Haniyeh in Tehran.

Abbas Araghchi said late Sunday he made the remark in a conversation with Italian Foreign Minister Antonio Tajani by telephone.

“Iran reaction to Israeli terrorist attack in Tehran is definitive, and will be measured & well calculated,” Araghchi wrote on the social platform X. “We do not fear escalation, yet do not seek it — unlike Israel.”

Tajani said in a statement he “called for restraint and to pursue a constructive approach, in order to stop the cycle of military actions in the region, which only risks bringing more suffering.”

“It is important that Iran exercises moderation towards Hezbollah in order to avert an escalation on the Lebanese-Israeli border, where Italian soldiers of the UNIFIL contingent are operating, and towards the Houthis in order to avoid an increase in tensions in the Red Sea area, where Italy plays a leading role in the (European Union’s) Aspides mission,” he said in the statement.

Their call came after Israel and the Lebanese militant group Hezbollah, long backed by Iran, traded heavy fire early Sunday but backed off from sparking a widely feared all-out war.

Meanwhile, a round of high-level talks in Cairo meant to bring about a cease-fire and hostage deal to at least temporarily end the 10-month Israel-Hamas war in Gaza ended Sunday without a final agreement, a U.S. official said. But talks will continue at lower levels in the coming days in an effort to bridge remaining gaps.

The official, who spoke on the condition of anonymity to discuss the talks, said lower level “working teams” will remain in Cairo to meet with mediators the United States, Qatar and Egypt in hopes to addressing remaining disagreements.

The talks included CIA director William Burns and David Barnea, the head of Israel’s Mossad intelligence agency. A Hamas delegation was briefed by Egyptian and Qatari mediators but did not directly take part in negotiations.