His visit comes a day before ceasefire negotiations between Hamas and Israel are set to resume, with top diplomats scrambling to avert all-out war after Iran and Hezbollah vowed revenge against Israel for recent high-profile assassinations.

Hochstein told a Beirut news conference that he and parliament speaker Nabih Berri, a Hezbollah ally, discussed "the framework agreement that's on the table for a Gaza ceasefire, and he and I agreed there is no more time to waste and there are no more valid excuses from any party for any further delay".

"The deal would also help enable a diplomatic resolution here in Lebanon and that would prevent an outbreak of a wider war," Hochstein said.

"We have to take advantage of this window for diplomatic action and diplomatic solutions. That time is now."

Late last month, an Israeli strike killed top Hezbollah commander Fuad Shukr in Beirut's southern suburbs, a stronghold of the group, just hours before an Israeli attack assassinated Hamas political leader Ismail Haniyeh in Tehran.