French President Emmanuel Macron has called on Israeli Prime Minister Benjamin Netanyahu, in a phone call, to "strictly respect the ceasefire" in Lebanon, a former French protectorate where Israel on Friday bombed the southern Beirut stronghold of Hezbollah for the first time after four months of truce.

The Beirut strike came after rockets were fired from Lebanon towards Israel on Friday, testing the fragile truce.

Prime Minister Nawaf Salam met Sunday in Mecca with Saudi Crown Prince Mohammad bin Salman after performing the Eid al-Fitr prayer with him at Mecca’s Grand Mosque.

Israeli Prime Minister Benjamin Netanyahu said Sunday that Israel is enforcing a tough and uncompromising policy in Lebanon.

Hezbollah chief Sheikh Naim Qassem has said in a speech broadcast overnight that he could not accept continued Israeli attacks on Lebanon, a day after Israel’s first strike on Beirut since a November ceasefire.

"This aggression must end. Israel... bombed Beirut's southern suburbs for the first time since the truce... we cannot allow this to continue," Qassem said in a televised address.

The Israeli attack that targeted Beirut’s southern suburbs for the first time since the latest war will be discussed in meetings that President Joseph Aoun is expected to hold following his return from France on Friday evening, informed sources said.

Iran has described the "excuses" put forward to justify Israel's attack Friday on a Beirut southern suburb as "completely unjustified and baseless."

Foreign ministry spokesman Esmaeil Baqaei called for "decisive measures" from the international community to address the "lawlessness" of Israel's continual use of military force from Gaza to Syria and Lebanon.

An already fragile ceasefire between Israel and Hezbollah appeared to be on shaky ground Friday after rockets fired from Lebanon into northern Israel triggered Israeli airstrikes in the southern suburbs of Beirut.

The rocket launch from Lebanon was the second in a week, after a lull since December. In both cases, Hezbollah denied being behind the attacks.

The defense ministers of Lebanon and Syria signed an agreement in Jeddah "to address security and military threats" along their common border, the official Saudi Press Agency reported on Friday.

Lebanon must disarm Hezbollah as agreed under the terms of the November truce with Israel, the U.S. State Department said Friday, after rocket fire prompted Israel to bomb Beirut's southern suburbs for the first time since the agreement came into effect.

The United States said Friday that it slapped sanctions on a Lebanon-based “sanctions evasion network” that supports Hezbollah’s “finance team, which oversees commercial projects and oil smuggling networks that generate revenue for Hezbollah.”