The Trump administration is sanctioning 36 entities that it says support Iran's aviation sector, which the administration says helps the Iranian regime "move weapons, personnel, and illicit cargo" as well as companies that they acted as intermediaries for Iran.

This is the most recent in a string of actions targeting the Iranian economy as the Trump administration shifts their war strategy to financial strangulation.

"Let this be a warning to anyone doing business with Iran’s remaining airlines, all of which we sanctioned today: You are at risk of being cut off from the global financial system," Treasury Secretary Scott Bessent said in a statement.

The Treasury Department sanctioned companies that facilitated the business of the already sanctioned Mahan Air as well as "three Iran-related aviation authorizations " that it said allowed for overflights and "on-U.S. airlines to fly U.S.-origin or U.S.-controlled commercial aircraft into Iran."

"Any foreign firm or individual enabling sanctioned Iranian airlines—including through aircraft transfers, cargo services, or general sales agent support—will face serious consequences for supporting the world’s leading state sponsor of terrorism," the Treasury Department said in a statement.

Attacks on Saudi Arabia by Yemen's Houthi rebels wounded at least 73 people and halted operations at some energy facilities on Tuesday, the Saudi-led coalition in Yemen and the Saudi Energy Ministry said.

Fires erupted ‌at a number of energy sites and several people were injured as emergency teams rushed to contain the blazes and assess the damage, the Saudi Energy Ministry said in a statement.

The Iran-backed Houthis attacked the southern cities of Abha, Khamis Mushait, Jazan and Najran, the coalition said in a statement. It described the latest attacks as a "dangerous escalation," vowing to respond.

"The coalition will take all necessary operational measures to deter this terrorist militia and resolutely confront its hostile approach," coalition spokesperson Col. Turki al-Malki said in a statement published on X.

The Saudi Foreign Ministry affirmed the kingdom's right to "take all necessary measures to defend its sovereignty, safeguard its national resources and preserve the security and safety of its citizens and residents on its territory. It will not tolerate any attack targeting its territory or national resources, in accordance with the rules of international law."

-ABC News' Ayat Al-Tawy and Othon Leyva

President Donald Trump on Monday claimed that oil prices will "drop precipitously" when the U.S. wins the ongoing war with Iran.

"Oil prices will drop precipitously, like everything else is dropping (but more!), when we WIN the war with Iran," the president wrote in a post to social media. "Three Dollars a gallon, but ultimately, below Two Dollars a gallon. It will all happen quickly, and Iran will never have a Nuclear Weapon. MAGA!"

Trump's post came as oil prices hit a six-week high on Monday, with global prices inching closer to $100 a barrel. U.S. oil was trading at $92.63 up about 1.3% and global oil was trading at $97.31 up more than 1%.

-ABC News' Lauren Peller and Zunaira Zaki

The Lebanese Ministry of Health said on Monday that 27 people have been killed in three days of Israeli strikes across southern Lebanon.

The agency also said that 69 people have been wounded including women, children and paramedics.

-ABC News' Ghazi Balkiz