How can you prevent an attack by returning foreign fighters if you are not cognizant of their names and links to ISIS?
Will there be a political backlash against British Prime Minister Theresa May, whose ruling Conservative Party is traditionally seen as 'stronger' on terrorism than its main rival, the Labour Party?
The reality is that Trump's focus on immigrants is to misconceive of the terrorist problem that exists in the United States.
Apostasy is a grave crime in Islam and punishable by death in the eyes of members of al Qaeda.
So Pakistan is a country that I'm very fond of and have spent a lot of time, but it is a country where conspiracy theories have a life of their own.
Using vehicles as weapons is a tactic that has often used by Palestinian terrorists to target Israelis, but in 2014, an ISIS spokesman had encouraged such vehicular attacks in the West, saying of ISIS' enemies, 'Run him over with your car.'
There is no hint that Trump wishes to engage in or to foment violence against the enemies, such as immigrants, he has identified as undermining the American way of life.
Often it is important to listen to what people aren't saying.
I've interviewed multiple people who know bin Laden... who tend to have a universal picture of what he's like, which is: modest, retiring, unassuming, kind of thoughtful - lots of things that don't fit with a mass murderer, which he is as well.
Bin Laden comes out of a business background - he studied public administration and economics at university, and he worked for his family company, which was obviously a rather successful enterprise.
Again and again since 9/11, terror attacks in the West have been carried out by second-generation Muslims who are citizens of the very country they are attacking.
It is in Pakistan's own interest that the Afghan army is able to fight effectively against the Taliban, which is more likely if they continue to have American advisers at their side.
The Turkish government will never tolerate the creation of a Kurdish state.
When Abu Zubaydah was shown a series of photos of al Qaeda members by Soufan, he identified one of them as the operational commander of 9/11, Khalid Sheikh Mohammed.
The E.U. is the latest of a series of multinational organizations set up after World War II to ensure that there would never again be a pan-European war and to create the conditions for a new European prosperity after the destruction wrought by the war against the Nazis. The E.U. has admirably succeeded at both.
The dangers of TATP bombs can be seen in the case of Matthew Rugo and Curtis Jetton, 21-year-old roommates in Texas City, Texas. They didn't have any bomb-making training and were manufacturing explosives in 2006 from concentrated bleach when their concoction blew up, killing Rugo and injuring Jetton.
In Syria, a no-fly zone targeted at Assad's air force and safe zones for refugees fleeing the fighting would help tamp down the death toll that plays into the hands of ISIS and other Sunni militants who can position themselves as the only groups that are really defending the Sunni population.
The reason that Islamist militants can assert that jihad is necessary against the perceived enemies of Islam is that there is sufficient ammunition in the Quran to buttress their beliefs. The same could also, of course, be said for the Old Testament, which is full of scenes of violent death visited on the enemies of God.
In February I secured permission to enter Osama bin Laden's compound in the northern Pakistani city of Abbottabad, where he was killed and where he had lived for the last half-decade of his life; the first, and only, journalist to do so.
Americans generally regard themselves as belonging to an exceptional nation. And in terms of living in a religiously tolerant and enormously diverse country, Americans can certainly take some justified pride.
Common sense would tell you that the idea that Saudi Arabia was paying for bin Laden's expenses while he was living in Abbottabad is simply risible. Bin Laden's principal goal was the overthrow of the Saudi royal family as a result of which his Saudi citizenship was revoked as far back as 1994.
Donald Trump's own mother Mary escaped the bone-crushing poverty of Scotland's remote Outer Hebrides for the promise of New York in 1929.
The image we have of bin Laden in his final years in Abbottabad is of an aging man with a graying beard watching old footage of himself; just another suburban dad flipping though the channels with his remote.
Candidate Trump had previously opined that 'Islam hates us' and had called for 'the total and complete shutdown of Muslims entering the United States,' an argument he has since modified and moderated.
For many terrorists, carrying out an attack allowed them to become the heroes of their own story.
Incompetence is a better explanation than conspiracy in most human activity.
An intelligence officer and historian, Rayburn published a 2014 book, 'Iraq After America,' which is a must-read for anyone who wants to understand how Iraq descended into chaos in the years after the American troop withdrawal at the end of 2011.
One only has to look at the debacle that has unfolded in Iraq after the withdrawal of U.S. troops at the end of 2011 to have a sneak preview of what could take place in an Afghanistan without some kind of residual American presence.
In Yemen, the United States conducted more drone strikes in 2016 than any year except 2012, the peak of the campaign in the country, according to data collected by New America.
Every lethal terrorist attack in the United States since 9/11 has been carried out by an American citizen or a legal permanent resident, not by recent immigrants or by refugees. So tamping down immigration won't fix the real issue, which is 'homegrown' terrorism.
There are all sorts of despicable people who journalists have done interviews with, and it's been useful. Isn't more information better than less information?
Al-Qaeda, which means 'the base' in English, lost its base and training camps in Afghanistan, while its leaders were on the run, captured, or dead. One year after the 9/11 attacks, al-Qaeda was still on life support.
Sanctions on Pakistan have been part of the troubled U.S.-Pakistan relationship in the past and should not be considered as an option in the future.
My quest to meet Osama bin Laden began in North London early in 1997. In the Dollis Hill section, I contacted Khaled al-Fauwaz, the spokesman for a Saudi opposition group, the Advice and Reformation Committee, which bin Laden had founded.
In 1999, NATO did impose a no-fly zone in Kosovo without seeking a U.N. resolution to carry out air strikes on Serbian forces.
Anwar al-Awlaki was a U.S. citizen by virtue of his birth in Las Cruces, New Mexico, in 1971 while his Yemeni father was studying at New Mexico State University.