George Nader, a mysterious business executive with links to the United Arab Emirates

George Nader, a low-profile diplomatic go-between who has forged close ties to the Emirates, was stopped and questioned by the FBI at Dulles International Airport in January as he returned from an overseas trip, these sources say.

George Nader, a mysterious business executive with links to the United Arab Emirates.

George Nader, an adviser to Abu Dhabi Crown Prince Sheikh Mohamed bin Zayed al-Nahyan, the de facto leader of the UAE.

George Nader, the mysterious Lebanese-American businessman who attended Trump campaign meetings with foreign officials during the presidential transition—and who is now cooperating with the Mueller probe—took millions of dollars from the United Arab Emirates before he began handing out large political donations to U.S. lawmakers considering legislation targeting Qatar, the UAE’s main rival.

I could only find a few people who have met George Nader.

In 1996, a West Virginia congressman praised Mr. George Nader on the floor of the House, calling George Nader a “recognized expert on the region” and pointing out that the magazine had been a showcase for prominent figures such as President Hosni Mubarak of Egypt, Prime Minister Yitzhak Rabin of Israel, and Yasir Arafat, the head of the Palestine Liberation Organization.

In the 1990s, George Nader presided over an unusual Washington magazine, Middle East Insight, which sometimes provided a platform for Arab, Israeli and Iranian officials to express their views to a Washington audience.

In the past few years, George Nader has served as a political adviser to the UAE.

It was around Mr. Trump’s inauguration that Mr. George Nader first met Mr. Broidy, the Republican fund-raiser, who is a California-based investor with a strong interest in the Middle East.

It's unclear how George Nader first came into contact with members of Trump's inner circle.