The Gulf Cooperation Council reaffirmed its support for Lebanon during what it said was a "critical stage" and called for an immediate ceasefire in the Gaza Strip, after holding an extraordinary ministerial meeting in Doha.
In a statement, the council condemned the escalation of conflict in Lebanon and the occupied Palestinian territories, calling on all involved parties to exercise self-restraint and refrain from violence.
More than 1,900 people have been killed and over 9,000 wounded in Lebanon in almost a year of cross-border fighting between Israel and Hezbollah, with most of the deaths occurring in the past two weeks, according to Lebanese government statistics.
Meanwhile, the Israeli military offensive in Gaza has killed more than 41,000 Palestinians since October 7, when Hamas gunmen led an incursion into Israel, killing around 1,200 people and abducting about 250 hostages, according to Israel and Gaza health authorities.
Israel pounded Lebanon with more than 120 air strikes on Tuesday in one of the heaviest days of bombing in weeks, Lebanese security sources said, as Israeli Prime Minister Benjamin Netanyahu said his military was deepening its operations in the country.
Syria's transitional leadership has located remnants of former President Bashar al-Assad's clandestine chemical weapons programme, including raw materials and munitions similar to those used to carry out deadly gas attacks during the country's long-running civil war.
US President Donald Trump, who turns 80 next month, said "everything checked out perfectly" after having his physical on Tuesday at Walter Reed National Military Medical ​Center, following a year of public attention on apparently minor health issues.
US Secretary of State Marco Rubio said on Tuesday negotiating a deal with Iran could "take a few days," quashing hopes for an imminent end to the conflict a day after US forces conducted what Washington called defensive strikes in southern Iran.