The two-week ceasefire announced earlier this month will expire on April 22.
President Donald Trump announced "major combat operations" against Iran on Feb. 28, with massive joint U.S.-Israeli strikes targeting military, government and infrastructure sites.
Following the announcement of a two-week ceasefire, initial U.S.-Iran talks in Pakistan earlier this month failed to reach a peace deal. The original ceasefire is set to expire on April 22.
Trump said on Sunday that U.S. negotiators would return to Islamabad on Monday for a new round of talks. White House press secretary Karoline Leavitt said Vice President JD Vance would accompany special envoy Steve Witkoff and Jared Kushner, the president's son-in-law, to Islamabad.
But Iran's Foreign Ministry spokesperson said Monday that Tehran has "no plans" to participate.
The State Department will host a second round of talks between Israel and Lebanon on Thursday, according to a State Department spokesperson.
"The United States welcomes the productive engagement that began on April 14," the spokesperson said. “We will continue to facilitate direct, good-faith discussions between the two governments."
-ABC News’ Chris Boccia
In an interview with Bloomberg on Monday, President Donald Trump said that it is "highly unlikely" that he extends the ceasefire if a deal is not reached before the deadline, which the president said is Wednesday evening ET.
The president also doubled down on his blockade of the Strait of Hormuz, saying, “I’m not opening it up.”
“They want me to open it. The Iranians desperately want it opened. I’m not opening it until a deal is signed,” Trump said, according to Bloomberg.
-ABC News’ Michelle Stoddart
President Donald Trump wrote on social media on Monday that Israel "never talked" him into war with Iran.
“Israel never talked me into the war with Iran, the results of Oct. 7th, added to my lifelong opinion that IRAN CAN NEVER HAVE A NUCLEAR WEAPON,” the president wrote.
Trump also said in the post that if Iran's leadership is "smart, Iran can have a great and prosperous future!"
-ABC News’ Michelle Stoddart
U.S. forces have directed 27 ships to turn around or return to an Iranian port since the start of the block against vessels entering or exiting Iranian ports and coastal areas, according to CENTCOM.
-ABC News’ Luis Martinez
