Who is Stephan Hubbard, the American teacher who wants to free Trump from a Russian cell?

Stephen Hubbard, a 74-year-old American teacher, has been imprisoned in Russia since 2022, accused of joining the Ukrainian army. Donald Trump is advocating for his release, having contacted Vladimir Putin directly. Hubbard, a retired English teacher from Michigan, was living in Ukraine when the invasion began. He was captured by Russian forces and sentenced to nearly seven years in a penal colony. His family disputes the charges, claiming he never served in the military. Currently, U.S. negotiators are discussing a potential deal for his release, which could benefit Trump's public image.