What is Donald Trump's controversial claim about Ukraine's role in the ongoing Russia-Ukraine war?

In this clip, former US President Donald Trump controversially claims that Ukraine is responsible for the war with Russia, stating directly to Ukrainian leadership, 'You should have ended it. Three years. You should have never started it.' This statement reverses the widely accepted understanding that Russia initiated the conflict when it invaded Ukraine nearly three years ago. Trump's assertion places blame on Ukraine's leadership, suggesting they could have prevented or terminated the war, rather than acknowledging Russia's role as the aggressor. This perspective contradicts the international consensus about the war's origins and raises significant concerns among national security experts regarding potential implications for US-Russia relations and Ukrainian sovereignty.