Peter Bergen

Mattis has been sharply critical of President Barack Obama's policies on Iran and Obama's capping of troop numbers and campaign end-dates in theaters of war such as Afghanistan and Iraq. Mattis also appears to be a skeptic of the Obama-era policy of putting women into combat roles.

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.

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.

The hard reality is that attacks by vehicles in public places are very hard to defend against in a free and open society. The best defense against such attacks is good intelligence, and that often comes from inside the Muslim community.

The dirty little secret of the intelligence world is that much of what you really need to know isn't exactly a secret anyway.

If the CIA and other U.S. intelligence agencies were private companies and were chronically unable to accomplish one of their key missions, their shareholders would have long ago revolted, fired their management, and their stock would be trading at values near zero.

In short, the hunt for bin Laden could not have been accomplished without every form of American intelligence-gathering.

In 2016, Washington and its coalition partners conducted more than 7,000 strikes in Iraq and Syria. And in Libya, the United States has conducted more than 350 air strikes since August as part of its military campaign against ISIS there.

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.

More than a decade and half after 9/11, U.S. military actions in countries such as Syria, Iraq and Afghanistan and several other Muslim nations are governed by the Authorization for the Use of Military Force (AUMF) that was passed in the days immediately after 9/11.

Both China and Russia felt duped by the U.N. 'no-fly' zone resolution regarding Libya in 2011 that eventually led to the ouster of Libyan dictator Moammar Gadhafi. China and Russia had abstained from the Libyan resolution, and neither country plans to make what they regard as a similar mistake again.

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.