Syrian authorities arrested Wassim al-Assad, a cousin of longtime ruler Bashar al-Assad, the interior ministry said Saturday, in one of the most high-profile arrests since the former president's ouster.

Prime Minister Benjamin Netanyahu said Sunday that his promise to destroy Iran's nuclear facilities had been "fulfilled" following strikes carried out "in perfect coordination" between the Israeli and U.S. militaries.

Iran's Foreign Minister Abbas Araghchi on Sunday condemned US attacks on key nuclear sites as "outrageous" and said his country has a right to defend its sovereignty.

"The events this morning are outrageous and will have everlasting consequences," he posted on X, adding that the attacks were "lawless and criminal" behaviour.

The U.N.'s International Atomic Energy Agency (IAEA) on Sunday said that it had not detected any increase in radiation levels at key nuclear sites in Iran following U.S. air strikes.

The Israeli military said it launched a fresh series of strikes Sunday targeting military targets including missile launchers in western Iran after the United States attacked the country's nuclear sites.

At least 16 people were hurt and at least one impact was reported in central Israel after Iran launched two waves of missiles at the country following the U.S. bombing of its nuclear sites, rescue services and reports said.

U.S. President Donald Trump said U.S. air strikes on Sunday "totally obliterated" Iran's main nuclear sites, as Washington joined Israel's war with Tehran in a flashpoint moment for the Middle East.

In a televised address to the nation from the White House, Trump warned that the United States would go after more targets if Iran did not make peace quickly.

Israel's military said Saturday its navy hit a Hezbollah "infrastructure site" near the southern Lebanese city of Naqoura, a day after Israel's defense minister warned the Lebanese armed group against entering the Iran-Israel war.

"Overnight, an Israeli Navy vessel struck a Hezbollah 'Radwan Force' terrorist infrastructure site in the area of Naqoura in southern Lebanon," the Israeli army said in a statement.

The Lebanese health ministry said an Israeli strike on south Lebanon's al-Abbasiyeh killed one person, as Israel said it killed a member of Hezbollah.

Israel has continued to carry out near-daily strikes on Lebanon despite a November ceasefire with Hezbollah and an unprecedented bombing campaign it launched on Iran last week.

Israel targeted "two centrifuge production sites" at Iran's Isfahan nuclear facility overnight in a second wave of strikes on the location since the start of the war, a military official said on Saturday.