Iran live updates: Trump announces he's extending ceasefire indefinitely

No final decision has been made on whether Iran will attend the Pakistan ceasefire talks, a spokesman for Iran’s Foreign Ministry, Esmaeil Baqaei, said on Tuesday.

"It is not due to indecision," he added, but rather due to "contradictory messages, inconsistent behavior, and unacceptable actions by the American side," he said in a phone interview on Iranian state TV.

"From the very outset, we have faced violations of the ceasefire by the opposing side, including measures such as a naval blockade," Baqaei said, adding that Iran will pursue a diplomatic track "whenever it determines that such a path serves its national interests."

-ABC News' Somayeh Malekian

Iran has not formally confirmed its participation in the Islamabad peace talks as of 10:30 a.m. ET, Pakistan's Minister of Information Attaullah Tarar said in a post on X on Tuesday.

With hours left before the U.S.-Iran ceasefire expires, Tarar said that Islamabad has made "sincere efforts" to convince the Iranian leadership to participate in the second round of talks, adding that these efforts continue.

"Decision from Iran to attend the talks before the end of two weeks ceasefire is critical," he wrote.

President Donald Trump projected confidence about the likelihood that a deal between the U.S. and Iran would be reached, saying that Iran has "no choice" but to send representatives, he said in an interview with CNBC.

"They have no choice but to send them. What I think is that we're going to end up with a great deal. I think it's got I think they have no choice," Trump said.

Trump added that he believes the U.S. is "in a very strong negotiating position" and doubled down on his insistence that the U.S. won't lift the blockade until after a deal has been reached.

"The blockade has been a tremendous success," Trump said.

Iran's defense forces are "in full readiness," and they are "negotiating with our finger on the trigger," Fatemeh Mohajerani, a spokesperson of Iran's government, said in an interview with the official Islamic Republic News Agency on Tuesday.

"We do not want to come under renewed attacks, but if such attacks occur, we will certainly respond more forcefully than before," Mohajerani said.

"The head of the Iranian negotiating team has been the field commander and is fully aware of the situation. Our people should know that this team is knowledgeable both in field realities and diplomacy," she said.

In an interview with Mehr News, the government spokeswoman said that she is not aware if the negotiation team has left Iran for Pakistan.

-ABC News' Somayeh Malekian