Trump says US Navy attacked and seized Iranian-flagged cargo ship

A meeting bringing together the Lebanese and Israel ambassadors to the U.S. at the State Department is underway, marking the first diplomatic talks between the countries in more than three decades.

Secretary of State Marco Rubio call it a "historic opportunity."

"We understand we're working against decades of history and complexities that have led us to this unique moment," Rubio told reporters.

In response to questions about ceasefires, he said this is "a lot more than just about that."

"This is about bringing a permanent end to 20 or 30 years of Hezbollah's influence in this part of the world -- not just the damage that's inflicted on Israel, the damage that's inflicted on the Lebanese people."

Rubio said the hope of the Trump administration was that the meeting would kick off "a process," acknowledging that "all of the complexities of this matter are not going to be resolved in the next six hours."

"But we can begin to move forward and create the framework where something can happen -- something very positive, something very permanent, so the people of Lebanon can have the kind of future they deserve, and so that the people of Israel can live without fear," he said.

State Department officials have also downplayed expectations of a major breakthrough coming out of the meeting, describing the talks as working-level despite the participation of Rubio.

-ABC News' Shannon K. Kingston

It appears likely that the U.S. and Iran will participate in another round of in-person negotiations before the two-week ceasefire between the countries is set to expire on April 22 -- and that those talks could take place before the start of next week, according to a U.S. official and another source with knowledge of the situation.

As of Tuesday morning, neither the U.S. nor Iran has officially committed to another meeting.

-ABC News' Shannon K. Kingston

In the first 24 hours of the U.S. naval blockade in the Strait of Hormuz, no ships have made it through and six merchant vessels were directed to turn around, according to U.S. Central Command.

More than 10,000 U.S. sailors, marines, and airmen, along with over a dozen warships and dozens of aircraft, are executing the blockade against vessels entering or leaving Iranian ports and coastal areas, according to CENTCOM.

"U.S. forces are supporting freedom of navigation for vessels transiting the Strait of Hormuz to and from non-Iranian ports," CENTCOM said.

As energy prices surge, President Donald Trump is urging the United Kingdom to drill oil from the North Sea.

Trump wrote on social media on Monday, “Europe is desperate for Energy, and yet the United Kingdom refuses to open North Sea Oil, one of the greatest fields in the World.”

“Norway sells its North Sea Oil to the U.K. at double the price. They are making a fortune,” Trump wrote. “U.K., which is better situated on the North Sea for purposes of energy than Norway, should, DRILL, BABY, DRILL!!!”

-ABC News’ Isabella Murray