Vance took the oath of office alongside the president.J.D. Vance is sworn in as U.S. Vice President as his wife Usha Vance looks on during the presidential inauguration of Donald Trump at the Rotunda of the US Capitol in Washington, on Jan. 20, 2025. Trump takes office for his second non-consecutive term as the 47th president of the United States. (Kevin Lamarque / POOL / AFP) (Photo by KEVIN LAMARQUE/POOL/AFP via Getty Images)Trump assumes office as the war in Ukraine enters its third year. While Trump initially vowed to end the war within 24 hours, his team later revised the timeline to 100 days, citing the intricate challenges of resolving the conflict.Ukraine remains cautious about the incoming administration, as Trump's past remarks on NATO and his perceived sympathies toward Russian President Vladimir Putin raise concerns about potential compromises unfavorable to Kyiv.