The war on terror, sometimes known as the 'Global War on Terror' or by the clunky acronym GWOT, became the lens through which the Bush administration judged almost all of its foreign policy decisions. That proved to be dangerously counterproductive on several levels.
What bin Laden had hoped to achieve in Afghanistan in the post-9/11 period, which was to drag the United States into a protracted guerrilla war like the one he had fought against the Soviets, never happened. Instead, that protracted guerrilla war is now playing out in Iraq, in the heart of the Middle East.
McMaster, 54, is the smartest and most capable military officer of his generation, one who has not only led American victories on the battlefields of the 1991 Gulf War and of the Iraq War, but also holds a Ph.D. in history.
The 9/11 attack itself played out around the world, with planning meetings in Malaysia, operatives taking flight lessons in the United States, coordination by plot leaders based in Hamburg, and money transfers from Dubai - activities overseen by al-Qaeda's senior command from secure bases in Afghanistan.
Syrian dictator Bashar al-Assad belongs to the small Alawite sect and is therefore considered a heretic by many Sunnis; al-Assad runs a secular regime, and therefore he is considered by Sunni militants to be an apostate, and he is inflicting a total war on his Sunni population.
Like the attack on Pearl Harbor, another hinge event in American history, 9/11 was a great tactical victory for America's enemies. But in both these cases, the tactical success of the attacks was not matched by strategic victories. Quite the reverse.
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.
In the past, Joint Special Operations Command, or JSOC, of which SEAL Team 6 is a key component, has only launched ground raids in Yemen when the lives of hostages held by al Qaeda seemed at risk.
Trump, of course, has been very wrong in the past about important issues such as President Barack Obama's place of birth and Mexican immigrants, but the Republican frontrunner is correct in saying that former Republican President George W. Bush did not keep the country safe during the 9/11 terrorist attacks.
Trump has long said he favors a 'safe zone' in Syria to prevent Basher al Assad's regime from carrying out indiscriminate airstrikes against Syrian civilians and to halt the refugee flow out of Syria.
If a parent knows that their kid is suddenly becoming infatuated with ISIS, they face a very difficult choice, which is, you know, do I - what do I do?
The senior director at the NSC for the Middle East is retired Col. Derek Harvey, an Arabic-speaking intelligence officer with a Ph.D. who served as the head of the U.S. military cell examining the insurgency in Iraq in 2003.
Sheikh Rahman had a doctorate in Islamic jurisprudence from al-Azhar University in Cairo, the Harvard of Islamic thought. He also had a long history of guiding terrorist groups.
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.
The Turkish government will never tolerate the creation of a Kurdish state.
The documentary feature film 'Legion of Brothers' tells the stories of the handful of U.S. Special Forces soldiers who, shortly after the 9/11 attacks, went into Taliban-controlled Afghanistan and, within a matter of weeks, overthrew the Taliban regime.
The Green Berets of U.S. Special Forces 5th Group - known as 'the Legion' - who led the anti-Taliban campaign represent a textbook case of a successful Special Forces campaign.
It's much harder to detect a lone wolf than it is somebody who's associated with a larger organization who's having planning meetings and making phone calls to people in the organization. And so that is really how the jihad has really developed in the United States.
Trump has long been a fan of Vladimir Putin but seems to be unaware that Russia's goal in Syria is simply the maintenance of its longtime ally President Bashar al-Assad in power. Indeed, Moscow has hitherto shown little appetite to focus on ISIS.
The Second Amendment is, of course, very much part of the American fabric. But the intent of the founders was that the amendment protected the rights of citizens to bear arms in a militia for their collective self-defense.