U.S. President Donald Trump urged Iran Tuesday to "do the smart thing" and make a deal, saying even as a Middle East ceasefire teetered that he did not want to kill more Iranians.

The United Arab Emirates said Tuesday its air defenses were engaging missiles and drones coming from Iran for the second consecutive day, weeks into a fragile ceasefire in the Middle East war.

"UAE air defense systems are actively engaging with missiles and UAV threats," the defense ministry said in a statement on X, adding that they had "come from Iran".

The United States is "not looking for a fight" over the Strait of Hormuz and its ceasefire with Iran still holds, but any attack on commercial shipping will be met with a "devastating" response, the Pentagon chief said Tuesday.

The warning from Pete Hegseth came on the second day of a U.S. effort to facilitate the transit of commercial ships through the Strait of Hormuz, which Iran had closed in response to the U.S.-Israeli war against the Islamic republic.

Hezbollah on Monday claimed a series of attacks on Israeli military targets in south Lebanon that it said were in response to "the Israeli enemy's violation of the ceasefire."

The state-run National News Agency (NNA) meanwhile reported Israeli air strikes on more than 20 south Lebanon locations, some of them towns where the Israeli military earlier Monday told residents to evacuate.

World leaders on Tuesday piled pressure on Tehran to stick to diplomacy to bring an end to the Middle East war, after a salvo of attacks in the region left a ceasefire crumbling.

Iran's powerful chief negotiator warned the United States against any further escalation in the Strait of Hormuz, after a spate of attacks risked reigniting the Middle East war.

Iran had "no pre-planned programme" to attack oil facilities in the United Arab Emirates, Iranian state TV said Monday, after the UAE blamed the Islamic republic for a drone strike at an energy installation in Fujairah.

Authorities in the emirate said the strike injured three Indian nationals who were taken to hospital. The UAE meanwhile said it had been targeted by a fresh Iranian barrage which it described as a "dangerous escalation", amid a ceasefire in the Middle East war.

Two people were injured when a residential building was targeted in Oman's Bukha along the coastline of the Strait of Hormuz, state media reported on Monday.

An Israeli military official said Monday that the army remained on high alert and was monitoring the situation after a U.S. admiral said forces destroyed six Iranian boats and shot down missiles.

U.S. President Donald Trump said Iran had "taken some shots" but caused little harm in the Strait of Hormuz Monday, while urging South Korea to join the war after one of its vessels was hit.