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Who is Hamas Leader Yahya Sinwar?

(FILES) Yahya Sinwar attends the opening of a new mosque in Rafah town in the southern Gaza Strip on February 24, 2017. (Photo by SAID KHATIB / AFP)
(FILES) Yahya Sinwar attends the opening of a new mosque in Rafah town in the southern Gaza Strip on February 24, 2017. (Photo by SAID KHATIB / AFP)
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Who is Hamas Leader Yahya Sinwar?

(FILES) Yahya Sinwar attends the opening of a new mosque in Rafah town in the southern Gaza Strip on February 24, 2017. (Photo by SAID KHATIB / AFP)
(FILES) Yahya Sinwar attends the opening of a new mosque in Rafah town in the southern Gaza Strip on February 24, 2017. (Photo by SAID KHATIB / AFP)

Hamas leader Yahya Sinwar, a mastermind of the Oct. 7, 2023 attack on Israel that triggered the war in Gaza, has been killed in a military operation.
His death would be a significant moment in Israel's yearlong offensive against the militant group and could complicate efforts to release dozens of hostages held in Gaza.
Sinwar became the head of Hamas after the killing of the previous leader, Ismail Haniyeh, in an explosion in Iran in July that was widely blamed on Israel.
Some things to know about Sinwar:
From refugee camp to Hamas militant Sinwar was born in 1962 in a refugee camp in the Gaza town of Khan Younis. He was an early member of Hamas, which was formed in 1987. He eventually led the group's security arm, which worked to purge it of informants for Israel.
Israel arrested him in the late 1980s and he admitted to killing 12 suspected collaborators, a role that earned him the nickname “The Butcher of Khan Younis.” He was sentenced to four life terms for offenses that included the killing of two Israeli soldiers, The Associated Press reported.
A prison leader Sinwar organized strikes in prison to improve working conditions. He also studied Hebrew and Israeli society.
He survived brain cancer in 2008 after being treated by Israeli doctors.
Sinwar was among more than 1,000 Palestinian prisoners released in 2011 by Prime Minister Benjamin Netanyahu as part of an exchange for an Israeli soldier captured by Hamas in a cross-border raid.
When Sinwar returned to Gaza, he quickly rose through Hamas' leadership ranks with a reputation for ruthlessness. He is widely believed to be behind the 2016 killing of another top Hamas commander, Mahmoud Ishtewi, in an internal power struggle.
Sinwar became head of Hamas in Gaza, effectively putting him in control of the territory, and worked with Haniyeh to align the group with Iran and its proxies around the region while also building the group's military capabilities.
There is widespread evidence that Sinwar, along with Mohammed Deif, the head of Hamas’ armed wing, engineered the surprise Oct. 7 attack on Israel.
The International Criminal Court’s prosecutor sought arrest warrants in May for Sinwar, Deif and Haniyeh for their alleged roles in the attack.
Israel said it killed Deif in a strike in July, while Hamas says he is still alive.
Where would this leave Hamas? Sinwar has been in hiding since the attack, and cease-fire negotiators have said it can take several days to send and receive messages from him.
Even before becoming Hamas' top leader, Sinwar was believed to have the final word on any deal to release hostages held by the militant group. Some 100 hostages remain in Gaza, around a third of whom are believed to be dead.
It's unclear who would replace Sinwar, and what that might mean for the cease-fire efforts, which sputtered to a halt in August after months of negotiations brokered by the United States, Egypt and Qatar.

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What to Know about the Tensions between Iran and the US before Their Third Round of Talks

The flags of US and Iran are displayed in Muscat, Oman, 25 April 2025. Iran and US will hold third round of nuclear talks on 26 April 2025, in Muscat. (EPA)
The flags of US and Iran are displayed in Muscat, Oman, 25 April 2025. Iran and US will hold third round of nuclear talks on 26 April 2025, in Muscat. (EPA)
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What to Know about the Tensions between Iran and the US before Their Third Round of Talks

The flags of US and Iran are displayed in Muscat, Oman, 25 April 2025. Iran and US will hold third round of nuclear talks on 26 April 2025, in Muscat. (EPA)
The flags of US and Iran are displayed in Muscat, Oman, 25 April 2025. Iran and US will hold third round of nuclear talks on 26 April 2025, in Muscat. (EPA)

Iran and the United States will hold talks Saturday in Oman, their third round of negotiations over Tehran’s rapidly advancing nuclear program.

The talks follow a first round held in Muscat, Oman, where the two sides spoke face to face. They then met again in Rome last weekend before this scheduled meeting again in Muscat.

Trump has imposed new sanctions on Iran as part of his “maximum pressure” campaign targeting the country. He has repeatedly suggested military action against Iran remained a possibility, while emphasizing he still believed a new deal could be reached by writing a letter to Iran’s 85-year-old Supreme Leader Ali Khamenei to jumpstart these talks.

Khamenei has warned Iran would respond to any attack with an attack of its own.

Here’s what to know about the letter, Iran’s nuclear program and the tensions that have stalked relations between Tehran and Washington since the 1979 revolution.

Why did Trump write the letter? Trump dispatched the letter to Khamenei on March 5, then gave a television interview the next day in which he acknowledged sending it. He said: “I’ve written them a letter saying, ‘I hope you’re going to negotiate because if we have to go in militarily, it’s going to be a terrible thing.’”

Since returning to the White House, the president has been pushing for talks while ratcheting up sanctions and suggesting a military strike by Israel or the US could target Iranian nuclear sites.

A previous letter from Trump during his first term drew an angry retort from the supreme leader.

But Trump’s letters to North Korean leader Kim Jong Un in his first term led to face-to-face meetings, though no deals to limit Pyongyang’s atomic bombs and a missile program capable of reaching the continental US.

How did the first round go? Oman, a sultanate on the eastern edge of the Arabian Peninsula, hosted the first round of talks between Iranian Foreign Minister Abbas Araghchi and US Middle East envoy Steve Witkoff. The two men met face to face after indirect talks and immediately agreed to this second round in Rome.

Witkoff later made a television appearance in which he suggested 3.67% enrichment for Iran could be something the countries could agree on. But that’s exactly the terms set by the 2015 nuclear deal struck under US President Barack Obama, from which Trump unilaterally withdrew America.

Witkoff hours later issued a statement underlining something: “A deal with Iran will only be completed if it is a Trump deal.” Araghchi and Iranian officials have latched onto Witkoff’s comments in recent days as a sign that America was sending it mixed signals about the negotiations.

Yet the Rome talks ended up with the two sides agreeing to starting expert-level talks this Saturday. Analysts described that as a positive sign, though much likely remains to be agreed before reaching a tentative deal.

Why does Iran’s nuclear program worry the West? Iran has insisted for decades that its nuclear program is peaceful. However, its officials increasingly threaten to pursue a nuclear weapon. Iran now enriches uranium to near weapons-grade levels of 60%, the only country in the world without a nuclear weapons program to do so.

Under the original 2015 nuclear deal, Iran was allowed to enrich uranium up to 3.67% purity and to maintain a uranium stockpile of 300 kilograms (661 pounds). The last report by the International Atomic Energy Agency on Iran’s program put its stockpile at 8,294.4 kilograms (18,286 pounds) as it enriches a fraction of it to 60% purity.

US intelligence agencies assess that Iran has yet to begin a weapons program, but has “undertaken activities that better position it to produce a nuclear device, if it chooses to do so.”

Ali Larijani, an adviser to Iran’s supreme leader, has warned in a televised interview that his country has the capability to build nuclear weapons, but it is not pursuing it and has no problem with the International Atomic Energy Agency’s inspections. However, he said if the US or Israel were to attack Iran over the issue, the country would have no choice but to move toward nuclear weapon development.

“If you make a mistake regarding Iran’s nuclear issue, you will force Iran to take that path, because it must defend itself,” he said.

Why are relations so bad between Iran and the US? Iran was once one of the US’s top allies in the Middle East under Shah Mohammad Reza Pahlavi, who purchased American military weapons and allowed CIA technicians to run secret listening posts monitoring the neighboring Soviet Union. The CIA had fomented a 1953 coup that cemented the shah’s rule.

But in January 1979, the shah, fatally ill with cancer, fled Iran as mass demonstrations swelled against his rule. The revolution followed, led by Khomeini, and created Iran’s theocratic government.

Later that year, university students overran the US Embassy in Tehran, seeking the shah’s extradition and sparking the 444-day hostage crisis that saw diplomatic relations between Iran and the US severed. The Iran-Iraq war of the 1980s saw the US back Saddam Hussein. The “Tanker War” during that conflict saw the US launch a one-day assault that crippled Iran at sea, while the US later shot down an Iranian commercial airliner that the American military said it mistook for a warplane.

Iran and the US have see-sawed between enmity and grudging diplomacy in the years since, with relations peaking when Tehran made the 2015 nuclear deal with world powers. But Trump unilaterally withdrew America from the accord in 2018, sparking tensions in the Middle East that persist today.