Iran's parliament speaker on Thursday said Lebanon was a key part of the two-week ceasefire with the United States, warning that violations would bring severe consequences, following massive Israeli strikes on Lebanon.

Israel vowed more strikes against Hezbollah on Thursday, dismissing mounting international demands that the fragile truce between the United States and Iran in the Gulf be expanded to cover the war in Lebanon.

Britain's foreign minister said Thursday the UK "strongly" wants Lebanon included in the Middle East ceasefire as Prime Minister Keir Starmer arrived in the United Arab Emirates.

U.S. Vice President JD Vance on Wednesday urged Iran not to let the fragile ceasefire deal fall apart over Israel's attacks on Lebanon, days before he is due to lead talks with Tehran in Pakistan.

Saudi Foreign Minister Prince Faisal bin Farhan held a phone conversation with his Iranian counterpart Abbas Araghchi, the Saudi foreign ministry said Thursday, in the first official contact between the countries since Tehran launched strikes against its Gulf neighbors in retaliation for Israeli-American attacks.

Iran's ambassador to Pakistan deleted a social media post saying an Iranian delegation would arrive in Islamabad on Thursday night, a move an embassy official later told AFP had been sent prematurely.

Iran's parliament speaker said Wednesday that a ceasefire and talks with the United States were "unreasonable" because of violations of Tehran's 10-point truce plan, including continued attacks in Lebanon, a drone entering Iranian airspace and a denial of the country's right to enrichment.

Israel's Prime Minister Benjamin Netanyahu said Wednesday that Israel remains prepared to confront Iran if necessary, despite a truce reached between the United States and Iran.

The U.S., Israel and Iran agree that a ceasefire is now in effect, but they're contradicting each other and themselves in terms of what's actually been agreed and what happens now, U.S. news portal Axios reported on Wednesday.

Iranian Foreign Minister Abbas Araghchi raised "ceasefire violations" by Israel with Pakistani mediators on Wednesday, an Iranian ministry statement said, as reports citing senior officials warned that Tehran could pull out of the truce over attacks on Lebanon.