Who is Trump's 'drone guy' Dan Driscoll, taking key role in Ukraine talks?

When talks to end the Russia-Ukraine war took an unexpected turn last week, with the leak of a peace plan said to come from the US, the Trump administration dispatched an unlikely figure to attend a flurry of overseas meetings.

The youngest-ever army secretary, 39-year-old Dan Driscoll, is often referred to as President Donald Trump's "drone guy" for his embrace of emerging battlefield technologies. Until recently, he was mostly known for discussions of budgets, supplies and staff issues in the military's largest branch.

Driscoll does not appear have a long history of dealing with Russian and Ukraine, or experience in international diplomacy, and has never held public office.

So, who is this increasingly prominent figure within the administration?

It is Driscoll's relationship with the now-vice president, JD Vance, that brought him into Trump's orbit.

Like his friend Vance, Driscoll attended a public university before joining the US Army, and then earned his law degree at the prestigious Yale University. Both men also worked in finance after graduating.

During his military career, Driscoll became an officer in 2007, led a cavalry platoon and deployed to Iraq for several months in 2009.

He has told the story of meeting Vance through a veterans' student group at law school, during which Vance reassured new students that they would at first feel as if they did not belong, but would excel at classes after a few months. Soon, Vance became Driscoll's friend and mentor.

Driscoll was on holiday with his family in Switzerland in the summer of 2024 when Vance called to tell him he was going to be Trump's running mate and asked him to join the campaign.

The next day, Driscoll flew back to the US, bought a suit at an outlet mall, and took an Uber to the Republican National Convention, he told the alumni magazine for the University of North Carolina, Chapel Hill - the institution where he was an undergraduate.

Once Trump returned to office, Driscoll was swiftly approved as army secretary in his Senate confirmation vote. His sphere of influence expanded after he became a key figure in Trump's deployment of the National Guard to US cities. Afterwards, he also took over the role of acting director of the Bureau of Alcohol, Tobacco, Firearms and Explosives.

In nominating Driscoll as his army secretary, Trump wrote he had a "powerful combination of experiences to serve as a disruptor and change agent".

Some in Washington are wondering if those qualities and his recent appearance on the world stage mean that Driscoll could one day replace Pete Hegseth, if Hegseth ever steps down as defence secretary.

While he has never held public office, Driscoll worked in Congress as an intern for the Senate's veteran affairs committee, and in 2020 he made an unsuccessful bid for a House seat in North Carolina. A former professor has suggested Driscoll aimed "to serve in the military, go to law school and be in politics".

There is also the possibility Driscoll could step officially into the role of negotiating with Ukraine when Trump's special envoy to the country, Keith Kellogg, leaves in January.

Or he could stay as the head of hundreds of thousands of troops in the US Army. Driscoll has previously highlighted that his father and grandfather served in the military before him, and he often speaks about his vision of transforming the Army.

Days before heading to Ukraine, Driscoll described to The Conversation podcast how he imagined the near future, when "every infantryman...will carry a drone into battle" and soldiers would rely on artificial intelligence because human brains will not be able to "keep up" with the pace of action.

"Our window to change is right now," he said in a speech in October. "And we will win with silicon and software, not our soldiers' blood and bodies."