Biden's Boldness: Crossing Putin's Red Lines.

President Biden has shown a growing willingness to cross Russian President Vladimir Putin's red lines by providing Ukraine with advanced weaponry, including F-16 fighter jets. U.S. officials say that Putin's reluctance to retaliate has influenced their risk assessment, but they remain wary of escalation. The conflict's most dangerous uncertainty is the actual red line, which is in Putin's head and can change from one day to the next. The Biden administration's willingness to cross Putin's red lines has bolstered Ukraine's ability to defend itself, but it remains to be seen whether Putin will continue to allow the West to defy his threats without consequence.