Iran live updates: Tehran plans new 'restricted zone' outside Strait of Hormuz

The Iranian Foreign Ministry issued a stark warning to South Korea on Monday amid reports the government is weighting a more active role in the Strait of Hormuz.

"South Korea and other countries know that any participation in America's aggressive and interventionist actions in the region will be considered complicity in overt military aggression, will only complicate the situation, and will certainly not make shipping routes safer," Esmaeil Baqaei, a spokesperson for the ministry, said at a briefing.

"We have not taken an official stance, of course, but we have been in contact appropriately with South Korean officials through our embassy in Seoul, and we publicly warn all countries that they should be careful not to become tools for America's aggressive actions," he continued.

Later on Monday, Baqaei posted a message on X saying ties between the two countries have "consistently developed on the basis of mutual respect" and that no country should "yield to America's pressure and threats."

-ABC News' William Gretsky

The speaker of the Iranian parliament, Mohammad Bagher Ghalibaf, posted to X on Monday in response to Secretary of Defense Pete Hegseth's threat to sink Iranian oil tankers if Iran targeted the U.S. Navy.

"It's simple: the oil and gas production chain here is sprawling, accessible, and exposed," Ghalibaf said. "American oil and gas companies across these waters and facilities share that exposure. Strike our assets and you get struck. We've already proven it. Ask the bases that are no longer viable."

-ABC News' Victoria Beaule and Morgan Winsor

Iranian Foreign Ministry spokesperson Esmaeil Baqaei told reporters at his weekly press conference on Monday that a Qatari delegation was in Iran on Sunday "to help reduce tensions," and that an Iranian technical delegation had visited Qatar recently.

-ABC News' Victoria Beaule and Morgan Winsor

Overnight Israeli strikes in southern Lebanon killed at least 11 people -- among them two children -- and wounded five others, according to reports by the Lebanese state news agency NNA.

The deadly strikes occurred in the town of Kfar Rumman in the south of the country, NNA reported. Nine people were killed in an airstrike on a residential building and two people were killed in a drone strike on a car, NNA said.

There were strikes in several other towns in southern Lebanon overnight, including in Deir Zahrani, where the Israeli military issued an evacuation warning ahead of a strike on a building.

Israel has not commented on the strikes in Kfar Rumman.

-ABC News' Ghazi Balkiz and Victoria Beaule