Trump said he teased the announcement as soon as American forces landed safely in a third-country. He said he did not inform lawmakers on Capitol Hill, including Speaker of the House Nancy Pelosi, ahead of the raid, saying he was fearful of leaks.
Defense Secretary Mark Esper said the mission was to capture or kill the IS leader. While Trump had initially said no Americans were injured, Esper said two service members suffered minor injuries but have already returned to duty. Sen. Lindsey Graham, R-S.C., said a military dog chasing al-Baghdadi was seriously wounded by an explosive blast.
In his freewheeling appearance Sunday, Trump suggested that the killing of al-Baghdadi was more significant than the 2011 operation ordered by his predecessor, President Barack Obama, that killed al-Qaeda leader Osama bin Laden, who was responsible for the 9/11 attacks.
Trump later repeated a false claim that he predicted the threat posed by bin Laden in a book before the 2001 attacks.
Trump's national security adviser, Robert O'Brien, said al-Baghdadi's remains would be dealt with in accordance with Islamic law and buried at sea in the same way that bin Laden's were.
Praise for the military operation was swift, coming from American allies and even the president's political opponents. In congratulating the U.S. forces and intelligence officials, but not Trump, former Vice President Joe Biden warned that IS "remains a threat to the American people and our allies."
Al-Baghdadi's presence in the village, a few kilometers from the Turkish border, was surprising, even if some IS leaders are believed to have fled to Idlib after losing their last sliver of territory in Syria to U.S.-allied Kurdish forces in March.
Iraqi officials said Sunday they passed information that helped ascertain al-Baghdadi's whereabouts to the U.S. from the wife of an Iraqi aide to al-Baghdadi, as well as al-Baghdadi's brother-in-law, who was recently arrested by the Iraqis. The officials weren't authorized to publicly discuss intelligence operations and spoke on condition of anonymity.
Trump said the death of al-Baghdadi shows the United States will continue pursuing other terrorist leaders and that none should rest easy.
"These savage monsters will not escape their fate," he said and that the "losers" who worked for al-Baghdadi had "no idea what they were getting into."
But one counterterrorism expert said al-Baghdadi's death is not the end of IS.
"Counterterrorism operations, including targeting key leaders, will not defeat the Islamic State, al-Qaida, or any of the Salafi-jihadi groups that threaten U.S. interests today," said Katherine Zimmerman of the American Enterprise Institute. "Counterterrorism must be part of the strategy, but reducing the strategy to just special operations raids and drone targeting, as this administration seems to want to, guarantees a forever war."
Al-Baghdadi had led IS for the last five years, presiding over its ascendancy as it cultivated a reputation for beheadings and attracted tens of thousands of followers to a sprawling and self-styled caliphate in Iraq and Syria. He remained among the few IS commanders still at large despite multiple claims in recent years about his death and even as his so-called caliphate dramatically shrank, with many supporters who joined the cause either imprisoned or jailed.
His exhortations were instrumental in inspiring terrorist attacks in the heart of Europe and in the United States. Shifting away from the airline hijackings and other mass-casualty attacks that came to define al-Qaida, al-Baghdadi and other IS leaders supported smaller-scale acts of violence that would be harder for law enforcement to prepare for and prevent.
They encouraged jihadists who could not travel to the caliphate to kill where they were, with whatever weapon they had at their disposal. In the U.S., multiple extremists have pledged their allegiance to al-Baghdadi on social media, including a woman who along with her husband committed a 2015 massacre at a holiday party in San Bernardino, California.
With a $25 million U.S. bounty on his head, al-Baghdadi was far less visible in recent years, releasing only sporadic audio recordings, including one just last month in which he called on members of the extremist group to do all they could to free IS detainees and women held in jails and camps.
The purported audio was his first public statement since last April, when he appeared in a video for the first time in five years. In that video, which included images of the extremist leader sitting in a white room with three others, al-Baghdadi praised Easter Day bombings that killed more than 250 people and called on militants to be a "thorn" against their enemies.
In 2014, he was a black-robed figure delivering a sermon from the pulpit of Mosul's Great Mosque of al-Nuri, his only known public appearance. He urged Muslims around the world to swear allegiance to the caliphate and obey him as its leader.
"It is a burden to accept this responsibility to be in charge of you," he said in the video. "I am not better than you or more virtuous than you. If you see me on the right path, help me. If you see me on the wrong path, advise me and halt me. And obey me as far as I obey God."
Al-Baghdadi was born Ibrahim Awwad Ibrahim Ali al-Badri al-Samarrai in 1971 in Samarra, Iraq, and adopted his nom de guerre early on. Because of anti-U.S. militant activity, he was detained by U.S. forces in Iraq and sent to Bucca prison in February 2004, according to IS-affiliated websites.
He was released 10 months later, after which he joined the al-Qaida branch in Iraq of Abu Musab al-Zarqawi. He later assumed control of the group, known at the time as the Islamic State of Iraq.
After Syria's civil war erupted in 2011, al-Baghdadi set about pursuing a plan for a medieval-style Islamic State, or caliphate. He merged a group known as the Nusra Front, which initially welcomed moderate Sunni rebels who were part of the uprising against Syrian President Bashar Assad, with a new one known as the Islamic State of Iraq and the Levant. Al-Qaida's central leadership refused to accept the takeover and broke with al-Baghdadi.
Al-Baghdadi's fighters captured a contiguous stretch of territory across Iraq and Syria, including key cities, and in June 2014, it announced its own state — or caliphate. Al-Baghdadi became the declared caliph of the newly renamed Islamic State group. Under his leadership, the group became known for macabre massacres and beheadings —often posted online on militant websites — and a strict adherence to an extreme interpretation of Islamic law.
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By ROBERT BURNS, DEB RIECHMANN and ZEKE MILLER Associated Press
Associated Press writers Eric Tucker and Jill Colvin in Washington, Zeina Karam in Beirut, Qassim Abdul-Zahra in Baghdad and Zeynep Bilginsoy in Istanbul contributed to this report.
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