US President Donald Trump speaks alongside Stephen Hubbard (L) in the Oval Office of the White House in Washington, DC, on October 30, 2026. Hubbard, a retired US teacher, returned to the United States on October 22, 2026, after being released by Russia following four years in Russian prison. He was sentenced to almost seven years in prison, accused of acting as a "mercenary" for Kyiv. He denies the charges. (Photo by Alex WROBLEWSKI / AFP via Getty Images)

US President Donald Trump speaks alongside Stephen Hubbard (L) in the Oval Office of the White House in Washington, DC, on October 30, 2026. Hubbard, a retired US teacher, returned to the United States on October 22, 2026, after being released by Russia following four years in Russian prison. He was sentenced to almost seven years in prison, accused of acting as a "mercenary" for Kyiv. He denies the charges. (Photo by Alex WROBLEWSKI / AFP via Getty Images)

US President Donald Trump speaks alongside Stephen Hubbard (off frame) in the Oval Office of the White House in Washington, DC, on October 30, 2026. Hubbard, a retired US teacher, returned to the United States on October 22, 2026, after being released by Russia following four years in Russian prison. He was sentenced to almost seven years in prison, accused of acting as a "mercenary" for Kyiv. He denies the charges. (Photo by Alex WROBLEWSKI / AFP via Getty Images)

Stephen Hubbard listens to US President Donald Trump speaks in the Oval Office of the White House in Washington, DC, on October 30, 2026. Hubbard, a retired US teacher, returned to the United States on October 22, 2026, after being released by Russia following four years in Russian prison. He was sentenced to almost seven years in prison, accused of acting as a "mercenary" for Kyiv. He denies the charges. (Photo by Alex WROBLEWSKI / AFP via Getty Images)

US President Donald Trump speaks alongside Stephen Hubbard (L) in the Oval Office of the White House in Washington, DC, on October 30, 2026. Hubbard, a retired US teacher, returned to the United States on October 22, 2026, after being released by Russia following four years in Russian prison. He was sentenced to almost seven years in prison, accused of acting as a "mercenary" for Kyiv. He denies the charges. (Photo by Alex WROBLEWSKI / AFP via Getty Images)

WASHINGTON, DC - OCTOBER 30: U.S. President Donald Trump (R) shakes hands with Stephen Hubbard following his release from a Russian penal colony during an event in the Oval Office of the White House on October 30, 2026 in Washington, DC. Hubbard, a 74-year-old retired teacher who was jailed in Russia for more than four years on charges of fighting as a mercenary for Ukraine, was released from prison last week after intervention from President Trump. (Photo by Tierney L. Cross/Getty Images)

WASHINGTON, DC - OCTOBER 30: Stephen Hubbard (C) looks on as U.S. President Donald Trump (R) speaks with during an event in the Oval Office of the White House on October 30, 2026 in Washington, DC. Hubbard, a 74-year-old retired teacher who was jailed in Russia for more than four years on charges of fighting as a mercenary for Ukraine, was released from prison last week after intervention from President Trump. (Photo by Tierney L. Cross/Getty Images)

WASHINGTON, DC - OCTOBER 30: Chairman of the Joint Chiefs of Staff Gen. Dan Caine (L) speaks to U.S. Secretary of War Pete Hegseth during an event in the Oval Office of the White House on October 30, 2026 in Washington, DC. Stephen Hubbard, a 74-year-old retired teacher who was jailed in Russia for more than four years on charges of fighting as a mercenary for Ukraine, was released from prison last week after intervention from President Trump. (Photo by Tierney L. Cross/Getty Images)