Iran live updates: US being 'humiliated' by Iran, German chancellor says

Kremlin spokesperson Dmitry Peskov told reporters that Iranian Foreign Minister Abbas Araghchi is due to meet with Russian President Vladimir Putin on Monday, as part of the Iranian diplomat's visit to St. Petersburg.

"The significance of this conversation is hard to overestimate in terms of how the situation around Iran and in the Middle East is developing," Peskov said.

Putin will meet with Araghchi at St. Petersburg's Presidential Library, Peskov said.

-ABC News' Joe Simonetti

U.S. Central Command said in a post to X late on Sunday that American forces have so far directed 38 vessels to "turn around, or return to port" amid the ongoing blockade of Iranian ports in the Persian Gulf and Gulf of Oman.

U.S. forces, CENTCOM said, are "preventing ships from entering or exiting."

The USS Abraham Lincoln was captured on satellite imagery some 80 miles from the blockade line -- which separates the Gulf of Oman from the Arabian Sea -- on Sunday, by the European Union-operated Copernicus Sentinel 2 satellite.

-ABC News' Victoria Beaule

At least 14 people -- among them two children -- were killed by Israeli strikes in southern Lebanon on Sunday, according to the Lebanese Ministry of Health, despite a ceasefire agreement between Israel and the Iran-backed Hezbollah militia.

Also on Sunday, the Israel Defense Forces reported that an Israeli soldier had been killed in combat in Lebanon.

Israeli Prime Minister Benjamin Netanyahu has accused Hezbollah of undermining the ceasefire. The group has fired into northern Israel on several occasions, with authorities there now reviewing Home Front security guidelines for citizens.

Earlier on Sunday, the IDF said it intercepted a projectile fired towards Israeli soldiers positioned in southern Lebanon. The IDF said it was striking Hezbollah infrastructure in Sunday's attacks.

-ABC News' Ghazi Balkiz, Jordana Miller and Guy Davies

President Donald Trump is expected to hold a meeting with key members of his national security team concerning the situation in Iran on Monday, according to two U.S. officials familiar with the plans.

The anticipated meeting comes as the Trump administration has grown increasingly bullish on the impact of its ongoing naval blockade of Iran's ports and increasingly skeptical that talks with Iran's current negotiators can yield the desired results, one of the officials said.

The official added that while Iran has proposed new terms for a deal to more permanently resolve the conflict between the countries over the weekend, those terms still appear to fall well short of the administration's red lines.

-ABC News' Shannon K. Kingston