As Iran retaliates, largest US military base in Middle East hit by ballistic missile, Qatar says

Ali Larijani, the influential secretary of Iran’s Supreme National Security Council, said in a post to X on Monday that President Donald Trump was engaged in "wishful thinking" with his strategy to subdue Iran and prompt regime change in Tehran.

"Trump's wishful thinking has dragged the whole region into an unnecessarily war and now he is rightly worried about more American casualties," Larijani wrote.

"It is indeed very sad that he is sacrificing American treasure and blood to advance [Israeli Prime Minister Benjamin] Netanyahu's illegitimate expansionist ambitions," Larijani added.

The Israel Defense Forces said in a statement that its expanded strikes in Lebanon -- including on the capital Beirut -- were a response to Hezbollah's launch of "several rockets and UAVs" from Lebanese territory toward Israel.

The IDF targets included "command posts, infrastructure and a vehicle carrying two Radwan operatives near the area of Kafr D'gal," the IDF said.

The IDF noted that its "significant" strikes against Hezbollah in southern and eastern Lebanon had been ongoing -- despite a November 2024 ceasefire -- prior to the launch of the U.S.-Israeli operation against Iran on Saturday.

-ABC News' Jordana Miller and Will Gretsky

The Israel Defense Forces said early on Monday that it had detected missiles launched from Iran toward Israel.

"Defensive systems are operating to intercept the threat," the IDF said. "In the past few minutes, the Home Front Command has sent a precautionary directive directly to mobile phones in the relevant areas."

Authorities in Bahrain separately issued an alert, saying a siren had been sounded.

"Citizens and residents are urged to remain calm and head to the nearest safe place," Bahrain said.

-ABC News’ Will Gretsky

In a statement on Monday, amid ongoing strikes against Lebanon, the Israel Defense Forces said, "The strikes continue — their intensity will increase.”

Overnight, the IDF had launched a series of strikes in Beirut and Southern Lebanon. The IDF said senior Hezbollah members were targeted in the Beirut area among the strikes.

Earlier on Monday, Lebanon had launched projectiles toward northern Israel that were intercepted.

"Shortly after Hezbollah’s rocket fire, in accordance with planning, we launched a first broad wave of strikes in Beirut and southern Lebanon, targeting senior operatives, headquarters, and terrorist infrastructure. We are also acting to evacuate civilians in southern Lebanon ahead of further strikes," the IDF said.