The ceasefire announced earlier this month was set to 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. On Tuesday, Trump announced he is extending the ceasefire and continuing the blockade until Iran's proposal is submitted and discussions are concluded "one way or the other."
According to a White House official, Vice President JD Vance won't be traveling to Pakistan on Tuesday.
"In light of President Trump's TRUTH Social post confirming the United States is awaiting a unified proposal from the Iranians, the trip to Pakistan will not be happening today," the official said. "Any further updates on in-person meetings will be announced by the White House."
-ABC News' Emily Chang
The Iran-backed Lebanese militant group Hezbollah said it fired rockets and drones at Israeli forces on Tuesday for the first time since a 10-day truce took effect Friday "in response to the blatant and documented violations" by Israel.
The alleged violations included "attacks on civilians and the destruction of their homes and villages in southern Lebanon," Hezbollah said in a statement.
The Israel Defense Forces said it responded by striking Hezbollah's rocket launcher.
"The launches constitute a blatant violation of the ceasefire agreement," the IDF said.
President Donald Trump announced Tuesday he will indefinitely extend the current ceasefire with Iran and continue a U.S. naval blockade of the Strait of Hormuz as talks continue.
Trump said in a social media post that Pakistani mediators have asked the U.S. to "hold our Attack" until Iranian officials "can come up with a unified proposal."
"I have therefore directed our Military to continue the Blockade and, in all other respects, remain ready and able, and will therefore extend the Ceasefire until such time as their proposal is submitted, and discussions are concluded, one way or the other," Trump continued.
This comes hours after Trump told CNBC he did not want to extend the ceasefire and threatened continued bombing. He also said Iran had no choice but to accept a deal.
The Trump administration is upping its efforts to target Iran's missile and drone program by slapping new sanctions on people and companies that it says are involved in supplying Iran with the key weapons.
The Treasury Department said it is “sanctioning 14 individuals, entities, and aircraft based in Iran, Türkiye, and the United Arab Emirates (UAE) for their involvement in procuring or transporting weapons or weapons components on behalf of the Iranian regime."
The administration’s targeting of Iranian weapons supplies comes as the U.S. has said that Iran's military capabilities have been severely diminished following Operation Epic Fury. This effort by the U.S. is to prevent Iran from rebuilding those military programs. The Treasury Department said in a statement that Iran is "seeking to reconstitute its production capacity" for drones and missiles.
"Iran is increasingly relying on Shahed-series one-way attack unmanned aerial vehicles (UAVs) to target the United States and its allies, including energy infrastructure in the region. These designations support Economic Fury in response to the Iranian regime’s continued threats to global security," the press release said.
The department said this new round of sanctions is authorized by a presidential memorandum signed by President Donald Trump last year, which aims to curtail Iran’s military and nuclear capabilities.
“The Iranian regime must be held accountable for its extortion of global energy markets and indiscriminate targeting of civilians with missiles and drones,” Treasury Secretary Scott Bessent said in a statement.
-ABC News' Michelle Stoddart
