The Treasury Department confirmed Tuesday that it would not renew the short-term authorization license waiving U.S. sanctions on Iranian oil already at sea. The sanctions will go back into effect on Sunday at 12:01 a.m. ET.

In a post on social media, the Treasury Department said that it was "moving aggressively with Economic Fury" to apply pressure to Iran and put financial institutions "on notice" that the department is prepared to implement secondary sanctions against foreign financial institutions doing business with Iran.

The sanctions were temporarily lifted as part of the administration's larger effort to increase supply and help drive global oil prices down. The U.S. also provided a waiver for Russian oil at sea to be temporarily unsanctioned amid the war. That license expired on April 11.

-ABC News' Michelle Stoddart and Nicholas Kerr

As of Tuesday, 399 service members have been wounded in the war with Iran, according to a U.S. official.

The number has risen slightly since the ceasefire. That can be attributed to delayed reporting of traumatic brain injuries, as symptoms for those wounds can sometimes take a few days to manifest, according to the official.

Three service members are considered "seriously wounded," though it's unclear if those troops are the same who have been included in previous counts.

In total, 354 service members have been returned to duty.

-ABC News' Steven Beynon

Following the meeting with the Israeli and Lebanese ambassadors to the U.S., the State Department said there were "productive discussions on steps toward launching direct negotiations between Israel and Lebanon."

The department said that it seeks to lock the U.S. into a mediator role -- saying negotiations between the parties can't happen "through any separate track."

The parties agreed that direct talks would happen at a "mutually agreed time and venue," the department said, but gave no further details on when and where those talks might take place.

-ABC News' Shannon K. Kingston

The meeting at the State Department between Israel's ambassador to the U.S., Yechiel Leiter, and his Lebanese counterpart, Ambassador Nada Hamadeh, wrapped after more than two hours, according to a department official.

Before departing, Leiter told reporters that he and Hamadeh had discovered during the talks that Lebanon and Israel are "on the same side of the equation" and united against Hezbollah.

He said the two had envisioned a future where the only reason to cross over each other's borders was to conduct business or go on vacation -- scenarios that would be a remarkable turn of events from the current Israeli military action in Lebanon and decades of opposition to the normalization of ties between the nations.

Leiter stressed that Israel would not compromise on the security of its citizens and said Hamadeh had emphasized that Lebanon would no longer be occupied by Hezbollah.

Leiter did not suggest Israel would abandon its campaign against the Iranian proxy, saying, "It's imperative that there’s a complete de-linkage between Lebanon and Iran. Iran is the malign influence in the region and around the world, and Hezbollah is their proxy next to Israel."

Regarding a possible treaty with Lebanon, Leiter said that "we are working on the agreement on every front," but that "the security issue" would have to be resolved before there could be anything like the diplomatic agreements between Israel and other Abraham Accord countries.

Leiter did not discuss plans to fully disarm Hezbollah but said that Israel's action against the group had enabled Lebanon's government to take "bold" actions -- citing the direct talks that took place today as an example.

-ABC News' Shannon K. Kingston