What did US intelligence know before the 9/11 attacks?

America marked the 25th anniversary of the 9/11 attacks with solemn ceremonies across New York, the Pentagon, and Pennsylvania. Presidents past and present, including Donald Trump and Joe Biden, attended memorials, where moments of silence were observed and the names of nearly 3,000 victims were read. A "Tribute in Light" illuminated the Manhattan sky, and other landmarks lit up in blue. Commemorations also took place in Shanksville, Pennsylvania, where Flight 93 crashed. A 9/11 widow criticized Saudi Arabia's alleged role in the attacks, calling for accountability. Events were also held internationally, including in London and Toronto, to honor the victims.

The nation is pausing to commemorate the 25th anniversary of the September 11, 2001 terror attacks, which killed nearly 3,000 people when 19 al-Qaida hijackers crashed four planes into the World Trade Center, the Pentagon, and a field in Pennsylvania. Ceremonies are being held globally, featuring stories from survivors and those affected by the tragedy. In political news, Donald Trump's promise of a "Trump dividend" has drawn criticism, while JD Vance positioned himself as Trump's heir with a strong speech. A US appeals court rejected Trump's attempt to restrict mail-in voting. Separately, AI startup Anthropic warned of misuse for bioweapons, and California enacted legislation to protect young users from addictive social media features and regulate AI. US home sales declined in August due to rising mortgage rates and prices.

On Friday, Americans commemorated the 25th anniversary of the September 11th attacks, which killed nearly 3,000 people. The deadliest attack on US soil involved hijacked planes crashing into the World Trade Centre, the Pentagon, and a field in Pennsylvania. In New York, victims' families, Vice President J.D. Vance, and four former US presidents gathered at ground zero for a ceremony. The event included moments of silence marking the times of the plane crashes and tower collapses, and a reading of the names of the 2,977 victims from 9/11, as well as six from the 1993 World Trade Centre bombing. The article notes that some readers were children who never knew the relatives they lost.

Declassified CIA documents reveal that US presidents received numerous warnings about Osama bin Laden and al-Qaeda's intentions to attack the United States prior to the September 11, 2001 attacks. These presidential daily briefs, spanning from February 1998 to September 2001, detailed al-Qaeda's movements, financing, and networks. Warnings included specific threats of using explosive-laden airplanes against US cities and reports of hijack training. The documents also highlighted al-Qaeda's pursuit of chemical, biological, and radiological weapons. While the briefs accumulated warnings, they reportedly added little new information about the specific planning of the 9/11 attacks themselves.

On the 25th anniversary of the September 11th attacks, the CIA declassified dozens of presidential daily briefs concerning Osama bin Laden and al-Qaida. These documents, the agency's largest release of such materials, detail intelligence gathered by government officials leading up to the attacks. They illustrate the tracking of bin Laden's movements, support systems, and concerns about potential threats to US targets, as well as officials' understanding of his network and its financing. The briefs, ranging from 1998 to September 2001, reveal discussions of bin Laden's interest in weapons of mass destruction, potential attacks on US soil, and hijack training within his network. While the documents do not appear to reveal new information on the attacks' planning, they highlight the intelligence landscape prior to 9/11.

Twenty-five years after the 9/11 attacks, the United States has significantly enhanced its national security architecture, making large-scale attacks like 9/11 far more difficult. The creation of agencies like the Transportation Security Administration and the Department of Homeland Security, along with improved intelligence sharing, has been instrumental. However, the nature of terrorism has evolved, shifting towards individuals radicalized online, small cells, and cyber threats, which are harder to detect. While the U.S. is safer from the specific threat of 2001, it faces new and complex challenges from a broader range of adversaries and attack methods. This transformation has led to debates about the cost and effectiveness of the post-9/11 security apparatus in addressing contemporary threats.

Former top US diplomat Zalmay Khalilzad has expressed misgivings about the US handling of the Afghanistan and Iraq wars following the 9/11 attacks. In an Al Jazeera interview, Khalilzad stated that post-9/11 anger and fear led to rushed decisions, including the invasion of Afghanistan. He believes the US should have negotiated with the Taliban in 2001, a missed opportunity that prolonged conflict. Regarding the Iraq War, Khalilzad cited problematic intelligence and the fear of another attack as justifications, acknowledging that the information used was flawed. He suggested that without 9/11, the US might not have invaded Iraq.

Former Canadian Prime Minister Jean Chretien, speaking at a 25th anniversary ceremony in Gander, Newfoundland, for the September 11th attacks, delivered a message to the United States: "Never mistake our generosity for weakness." Chretien, who was prime minister during the attacks, emphasized that while Canadians are tolerant and kind, they "bow to no one." The remarks were made in Gander, the town that hosted nearly 6,600 stranded Americans when US airspace was closed on September 11th. The former leader stated his comments were made "as one friend to another" and highlighted the need for honesty between allies. This occurred amidst ongoing trade disputes between Canada and the US under President Donald Trump.