France and Russia have since coordinate military airstrikes on Isis strongholds in Raqqa and Der ez Zor, while Mr Putin has issued instructions to a Russian missile cruiser stationed in the Mediterranean Sea to coordinate with French military forces on joint operations against Isis in Syria.
"He's an encyclopedia in shoes," said Dr. Jenny Weber, a former graduate student of Professor McPherson's who has since helped to coordinate his class at Princeton, "The Civil War and Reconstruction".
The news quickly electrified participants in the virulent debate that has erupted since coordinated suicide bombing attacks on May 12 killed 25 people at three housing compounds.
And while Germany, France and Britain have all confirmed that they remained on high alert, as they have been since coordinated train bombings in Madrid killed 191 people on March 11, they said their national intelligence services had unearthed nothing to suggest that terror attacks on European soil were more likely than before.
Things have since changed.
The work of gathering and managing this information has been coordinated since 2003 by Edison Research, a survey and analytics firm.
The email, from an unidentified official with the Army Corps of Engineers, says: "We anticipate no issues, since action has been coordinated with the VP's office".
Since 2001, the central administration has been coordinated by a High Commissioner for Health.
Monitoring influenza activity has been coordinated by the European Influenza Surveillance Scheme (EISS) since 1996.
In the years since, Al Qaeda has coordinated swarm attacks in Saudi Arabia, Tunisia, Turkey, Yemen and elsewhere.
