WASHINGTON -- U.S. President Joe Biden says the discovery of top-secret documents at former President Donald Trump鈥檚 Mar-a-Lago estate raised concerns that sensitive data was compromised and called it 鈥渋rresponsible.鈥�

Biden, who rarely does interviews, spoke to CBS鈥� 鈥�60 Minutes鈥� in a segment that aired Sunday. He said that when he heard about classified documents taken from the White House, he wondered how 鈥渁nyone could be that irresponsible.鈥�

Biden added: 鈥淎nd I thought, what data was in there that may compromise sources and methods?鈥�

The president said he did not get a heads-up before the Trump estate was searched, and he has not asked for any specifics 鈥渂ecause I don鈥檛 want to get myself in the middle of whether or not the Justice Department should move or not move on certain actions they could take.鈥�

The FBI says it took about 11,000 documents, including roughly 100 with classification markings found in a storage room and an office, while serving a court-authorized search warrant at the home on Aug. 8. Weeks after the search, Trump lawyers asked a judge to appoint a special master to conduct an independent review of the records.

The warrant says federal agents were investigating potential violations of three different federal laws, including one that governs gathering, transmitting or losing defence information under the Espionage Act.

Biden told 鈥�60 Minutes鈥� that when he heard about classified documents being taken from the White House, he wondered how 鈥渁nyone could be that irresponsible."

"And I thought what data was in there that may compromise sources and methods?鈥�

In the wide-ranging interview, the president wouldn鈥檛 commit to running for reelection in 2024, though he鈥檚 said in the past that he planned to.

鈥淢y intention, as I said to begin with, is that I would run again," he said. "But it鈥檚 just an intention. But is it a firm decision that I run again? That remains to be seen.鈥�

Biden was asked about growing concerns that Russia's efforts to seize Ukraine could inspire China's leader Xi Jinping to attack Taiwan. The island has been recognized by the U.S. as part of China but has its own democratic government. Xi and Russian President Vladimir Putin met last week.

Biden again said the U.S. forces would respond 鈥渋f in fact there was an unprecedented attack.鈥�

White House officials later said the official U.S. policy had not changed, and would not say whether American forces would be called to defend Taiwan. Biden has made the claim before, but the statements come at an increasingly tense time for U.S.-China relations, particularly after House Speaker Nancy Pelosi's trip there last month.

Beijing sees official American contact with Taiwan as encouragement to make the island鈥檚 decades-old de facto independence permanent, a step Biden and other U.S. leaders say they don鈥檛 support.

The president said the U.S. commitment to Ukraine was 鈥渋ronclad鈥� and would remain so 鈥渁s long as it takes.鈥� Ukrainian troops are engaged in a counteroffensive that has reclaimed towns and cities from Russian troops. But the toll the war has taken is vast, and fresh atrocities are being revealed, including torture chambers and mass graves. Since January 2021, the U.S. has given more than US$13.5 billion in security assistance to Ukraine.

In the same hour, 鈥�60 Minutes鈥� also aired an interview with Iranian President Ebrahim Raisi, who will be speaking to the U.N. General Assembly in New York this coming week. Raisi echoed standard Iranian lines about the status of currently stalled nuclear talks with world powers. He said the United States is not trustworthy and demanded guarantees that the U.S. would not withdraw from a deal as President Donald Trump did in 2018.

Raisi said he had no plans to meet with Biden on the sidelines of the U.N. event as it would serve no purpose, although he reiterated that Iran is willing to discuss prisoner exchanges with the United States. He also defended his country鈥檚 anti-Israel stance and said Tehran was committed to pursuing 鈥渏ustice鈥� for the Trump administration鈥檚 assassination of a top Iranian military commander.