Secretary of State Rubio says the U.S. is "very concerned" by expanding Israeli strikes targeting Syria's new government, and he wants "the fighting to stop."

THE HAGUE (Reuters) -Israeli airstrikes on Damascus are hampering Syria's efforts to find and destroy chemical weapons stockpiled during the rule of toppled ruler Bashar al-Assad, a government adviser said on Thursday.

The Israel Defense Forces (IDF) said the Damascus headquarters served as a command center for deploying regime forces to Suwayda, a southern Syrian region gripped by days of deadly clashes between government troops, Druze militias, and Bedouin groups.

Israel carried out a series of powerful strikes on the Syrian capital Damascus Wednesday, escalating a campaign it says is in support of an Arab minority group involved in deadly clashes with Syrian government forces.

The Israeli military said it had "struck the entrance gate" of the Syrian regime's military headquarters complex in Damascus.

Clan fighters gathered in the Syrian capital Damascus on Saturday to support Bedouin militants in their clashes with Druze armed factions in the southern province of Sweida despite calls for a ceasefire.

DAMASCUS, Syria (AFP) — Israel bombed the Syrian army's headquarters in Damascus on Wednesday after warning the Islamist-led government to leave the country's Druze minority alone, as authorities announced a ceasefire in the community's southern heartland after deadly sectarian clashes.

Residents reported calm in Syria's Sweida on Sunday after the Islamist-led government announced that Bedouin fighters had withdrawn from the predominantly Druze city and a U.S. envoy signaled that a deal to end days of fighting was being implemented.

Clashes raged in the southern Syrian city of Sweida on Wednesday after a ceasefire between government forces and Druze armed groups collapsed and as Israel threatened to escalate its involvement, saying it's in support of the Druze religious minority.