Were the US president allowed to construct a border wall with Mexico in exchange for ending the government shutdown, its staggering cost and logistical difficulty would undermine him, says Lincoln Mitchell.

Investigators believe the blaze, the deadliest residential fire to hit New York City in at least 25 years, was caused by a child playing with a stove, Mayor Bill de Blasio said.

At least 12 people, including a one-year-old baby, have died after a fire broke out in an apartment block in the Bronx area of New York.

A German man believed to have provided logistical support to the Hamburg-based September 11 hijackers has died, according to a newly released audio message from the leader of al-Qaida.

He climbed 110 stories, the same as the World Trade Centre

Lezlie Bauler works at a gym in Maryville, Tennessee. Yesterday, on the 15th anniversary of the September 11 attacks, a firefighter came in by himself with a special request.

Wal-Mart said a display of Coke cans stacked to look like the World Trade Centre at a Florida store has been removed and was not meant to be disrespectful near the anniversary of the September 11 attacks.

The director of the CIA has said his spy agency will not engage in waterboarding or other so-called enhanced interrogation techniques - even if ordered to by a future president.

Republican presidential candidate Donald Trump has been accused of attempting to incite a hate campaign, after he claimed he saw people across the river in New Jersey cheering the September 11 attacks — a claim officials strongly deny.

Former US president George HW Bush has criticised one-time defence chief Donald Rumsfeld and former vice president Dick Cheney in a new biography.

Muslim Americans responded with a mix of frustration and anger to what many see as a growing wave of Islamophobia fuelled by two of the Republican Party’s most popular presidential candidates, Donald Trump and Ben Carson.

Anjem Choudary, Britain’s most high-profile Islamist preacher, well-known globally for praising the men responsible for the September 11 attacks on the United States, was charged yesterday with inviting support for Islamic State.

After four home-grown suicide bombers killed 52 London commuters on July 7, 2005, British prime minister Tony Blair vowed that Britain would stop at nothing to defeat terrorism.

In this week’s Q&A Kehlan talks to Kevin Giblin from Mercyhurst College Ireland in Dungarvan, Co Waterford. Kevin has worked with the FBI and Nato and heads the Global Intelligence Forum, taking place on July 12-16 in Dungarvan.

Lawyers for victims of the September 11 attacks say they have new evidence that agents of Saudi Arabia “directly and knowingly” helped the hijackers, including sworn testimony from the so-called 20th hijacker and from three principals of the US government’s two primary probes of the attacks.

The United States and Nato have formally ended their war in Afghanistan with a ceremony at their military headquarters in Kabul.

Radicals who incite others to commit acts of terror or who recruit or train people for terrorism face up to 10 years in prison under new proposals.

After years of resisting the pull of more Middle-East conflicts, US President Barack Obama has sent the military back into action in Iraq, where he once accused his predecessor of waging a "dumb war".

A woman, who lost her brother in the September 11 attacks, is rejoicing after the flag given to her to commemorate his brave actions was returned.

Shoe-bomb plotter Saajid Badat admits he was once in the thick of al Qaida’s plans, winning a hug from Osama bin Laden for his quest to blow up a US plane in mid-air.

A branch of the US Treasury uses sophisticated financial tools to hit targets linked to hostile governments. This is the new global warzone, write Leah McGrath Goodman and Lynnley Browning.

A British man who admits his role in a plot to use explosives hidden in shoes to blow up planes in 2001 today testified by video at the US trial of Osama bin Laden’s son-in-law.

Scores of retired New York City police officers, firefighters and prison guards have been charged with faking psychiatric problems to get disability benefits.

America’s intelligence chief has released more documents that tell how the National Security Agency was given the go-ahead to start collecting bulk phone and internet records in the hunt for al Qaida terrorists.

Al-Qaeda’s leader has marked the anniversary of the 9/11 attacks by calling on Muslims to strike inside the United States, with attacks, big or small, using any opportunity they can to “bleed” America financially.

A man accused of plotting with al Qaida members in Iran to derail a train in Canada has rejected the charges and said authorities were basing their conclusions on appearances.

New details have emerged about how the two Boston Marathon bombing suspects may have been swayed by a radical, anti-American strain of Islam.

The fatal explosions in Boston have hints of a right-wing terrorist attack rather than al Qaida-inspired extremism, according to one of the world’s leading experts on counter-terrorism.

Osama bin Laden’s son-in-law has pleaded not guilty to plotting against Americans in his role as al Qaida’s leading spokesman as a landmark case trying a terror suspect on US soil moves forward.

The chief prosecutor for the Guantanamo Bay military tribunals said that he is seeking to withdraw one of the eight charges against five men accused of planning and aiding the September 11 terrorist attacks.

Millions of people across the north-eastern United States were bracing for Hurricane Sandy as the superstorm picked up speed over the Atlantic.

Traders in London were left in limbo today after Hurricane Sandy forced Wall Street to shut down for the first time since the September 11 attacks.

Victims’ families were poised to gather and grieve today at Ground Zero, the Pentagon and near Shanksville, Pennsylvania, on the 11th anniversary of the September 11 attacks.

A lawyer for the mastermind of the 1993 World Trade Centre bombing asked a US federal appeals court to let him investigate why the government insists his imprisoned client is still a danger to America.

Sacha Baron Cohen atones for the sins of 'Bruno' with this gleefully bad-taste fish-out-of-water comedy, which kicks sand in the eye of political correctness.

The man who called himself the “mastermind” of the September 11 attacks, and four comrades, are back before a military judge in Guantanamo Bay to face charges that could lead to their execution.

A British man who trained to be a shoe bomber said Osama bin Laden told him shortly after the September 11 2001 attacks that he believed a follow-up terrorist attack could doom the American economy.

The Pentagon has said it is ready to resume a trial at Guantanamo Bay for the acknowledged mastermind of the September 11 attacks and four other men.

The gunman wanted for shooting seven people dead plans to turn himself in to French police surrounding him at night “to be more discreet,” the Interior Minister says.

A US judge has signed a default judgment finding Iran, the Taliban and al-Qaida liable for the September 11, 2001 attacks.

A US man has been convicted of conspiring to help al-Qaida and plotting to kill US soldiers in Iraq.

A US citizen and al-Qaida sympathiser accused of plotting to bomb police and post offices in New York remained in custody today on terrorism-related charges.

A Saudi man considered among the most senior figures in al-Qaida has emerged from nine years of secret confinement to face charges of orchestrating the deadly attack on the USS Cole, in the start of a new round of Guantanamo Bay war crimes tribunals under a president who vowed to halt them.

A private intelligence monitoring service says al-Qaida has marked the 10th anniversary of the September 11 attacks with an hour-long video released on jihadist websites.

Visitors entered New York's 9/11 memorial for the first time today as the site at Ground Zero opened its doors to the public.