WASHINGTON — It is rare that a president can show he is living up to the mantle of "leader of the free world" — and even less common for him to do so against the backdrop of his main political rival praising an autocrat. But that's what President Joe Biden did during his first State of the Union address, highlighting how he has led the Western world in defending Ukraine against Russia's invasion. "Six days ago, Russia’s Vladimir Putin sought to shake the very foundations of the free world, thinking he could make it bend to his menacing ways. But...