Ukraine is important to US security, states Pentagon chief Lloyd Austin. The war unleashed by Russia is a direct threat to European security and a challenge to NATO. The US Secretary of Defense emphasized that there are four obvious reasons why Ukraine is important to US security. “Putin’s war is a direct threat to European security, a clear challenge to our NATO allies, an attack on our shared values, and a frontal assault on the rules-based international order that keeps us all safe,” Austin said. He believes that there is no “silver bullet” to stop Putin’s attack on Ukraine. Only joint assi…