President Donald Trump was recently briefed on a variety of ground troop options that included the potential seizure of Iran's highly enriched uranium and Kharg Island, a source familiar with the briefing told ABC News.

No final decision about whether to choose to use ground forces has been made by President Trump, the source said.

Seizing the highly enriched uranium would involve a special operations force, likely a large force, as ABC News has previously reported.

Any forces that might be involved in seizing the uranium would also have undergone specialized and regular training for such a mission.

-ABC News' Luis Martinez

The U.S. and Iran are discussing a potential deal that would involve a ceasefire in exchange for Iran re-opening the Strait of Hormuz, sources familiar with the ongoing negotiations confirmed to ABC News.

Vice President JD Vance passed a message to Iran via Pakistani intermediaries as recently as Tuesday, a U.S. official and a Pakistani official confirmed to ABC.

At Trump's direction, Vance signaled privately that Trump was open to a ceasefire as long as certain U.S. demands were met, including the re-opening of the Strait of Hormuz, a U.S. official said.

The vice president's involvement was first reported by Reuters.

Vance also delivered a stern message that President Trump was "impatient" and there would be growing pressure on Iranian infrastructure unless the Iranians made a deal, the U.S. source said.

-ABC News' Mariam Khan

Iran said it will not agree to a temporary ceasefire, calling instead for a complete end to the war across the region. Iran also wants strong guarantees that fighting will not happen again, along with compensation for damage caused to its people, Iran’s Foreign Minister Abbas Araghchi said in an interview with Al Jazeera Tuesday.

Araghchi said there is little trust between Iran and its opponents, and that serious changes would be needed before any talks could move forward. He added that Iran has not yet decided whether it will enter negotiations.

Araghchi also criticized the U.S. for using deadlines and threats, saying that approach has made tensions worse.

On shipping, he said the Strait of Hormuz is partly controlled by Iran and Oman, and that ships from countries at war with Iran would not be allowed to pass. Other ships can still use the route.

The White House has issued a release detailing the administration's reasoning for the war hours before President Donald Trump is set to address the nation about the Iran war.

"Tonight, President Donald J. Trump will address the nation on Operation Epic Fury — a decisive campaign of American strength that is systematically dismantling the Iranian regime’s ability to threaten the United States and the free world," the White House said.

"Under President Trump’s leadership, the U.S. military is executing this mission with unmatched power and precision. From day one, the objectives have been clear and unwavering: obliterate Iran’s ballistic missile arsenal and production capability, annihilate its navy, sever its support for terrorist proxies, and ensure the world’s leading state sponsor of terrorism never acquires a nuclear weapon," the White House said.

Since the war started, the Trump and his top aides have consistently pointed those four objectives for the war.

President Trump reiterated his calls for NATO allies to help patrol the Strait of Hormuz, telling Politico, “They gotta get guts and go in.”

“Just send your ships up there and enjoy it," the president told Politico in a phone interview after his evening address Wednesday.

Asked why he didn’t outright mention NATO in his address last night, Trump claimed he did so “indirectly.”

“Well, I did indirectly. I talked about the people that use the -- it wasn't a NATO speech, it was a Middle East speech, but I did indirectly. I talked about the Strait, they weren't there,” Trump said.

During his address Wednesday night, Trump repeated his claim that the U.S. doesn’t depend on oil from the Strait like other countries do, saying “we’re there to help our allies.”