Ihor has been fighting on Ukraine's eastern front since 2014, the year Russia illegally annexed Crimea and sent troops into the Donbas region. His call sign is "The Knifer". He also trains troops in hand-to-hand combat.

Ukrainian President Volodymyr Zelenskyy has warned that Friday's meeting between President Donald Trump and Russian President Vladimir Putin "will not achieve anything."

The US-Russia summit lets Putin get back to the top table of international diplomacy and thumb his nose at critics. Here’s what else he stands to gain.