WASHINGTON — At Moscow’s New Economic School, the annual graduation ceremony often features a prominent political figure. President Barack Obama addressed graduates at the prestigious institution in 2009. The former presidents of Mexico and the Czech Republic have spoken at recent ceremonies.

Last year, the university invited Carter Page, a little-known former investment banker and foreign policy adviser to then-U.S. presidential hopeful Donald Trump. It wouldn’t be the last time Page would draw unexpected — and some say outsized — attention for his relationship to Trump, his entanglements in Russia and the murky nexus between the two.

Page, who left the campaign before the election, has emerged as a key figure in the controversy surrounding Trump associates’ connections to Russia.

The New York Times has reported that Page is among the Trump associates whose potential contacts with Russia are being investigated by the FBI. Congressional committees probing Russia’s hacking during the election and Trump campaign ties have asked Page to preserve materials related to their investigations.

For those who contend the scrutiny of Trump is overblown, Page is the sort of figure often associated with an understaffed presidential campaign that struggled to recruit policy advisers and spent little time vetting those who did join the team. But to those who believe Trump’s campaign was colluding with Russia as it hacked Democratic groups, Page may be the key link between the candidate and Moscow.

Page contends he’s the target of a plot hatched by Trump’s former rival, Hillary Clinton, and allies who engaged in “severe election fraud in the form of disinformation, suppression of dissent, hate crimes and other extensive abuses.”

Page’s appearance at the Russian university immediately raised eyebrows.

For an adviser to an American presidential hopeful speaking overseas, his message was strikingly critical of the United States. It came as Trump’s calls for warmer relations with the Kremlin were a source of criticism from Democrats and alarm from some fellow Republicans.

Washington had a “hypocritical focus on ideas such as democratization, inequality, corruption and regime change” in its dealings with Russia, Page said at the school.

Page and former Trump campaign officials say he made the trip in a personal capacity and not as a representative of the campaign. But university officials have been clear that Page’s connections and insight into the Trump campaign were the draw.

Trump said he has never met Page. Those who served on the campaign’s foreign policy advisory committee said they had limited contact with Page.

But in a letter late Wednesday to the Senate Intelligence Committee, Page cast himself as a regular presence in Trump Tower, where the campaign was headquartered.