Russian President Vladimir Putin has appeared in military fatigues in recent public footage, a rare move that analysts say is intended to project resolve as the war in Ukraine continues and key diplomatic engagements approach. The Kremlin on December 28 released video of Putin receiving military briefings at an undisclosed command post, alongside senior officials including Chief of the General Staff Valery Gerasimov. The footage was published hours before a scheduled meeting between U.S. Preside

ASSASSIN IN ACTION: Disturbing surveillance footage appears to show the assassination of a vocal critic of Russian President Vladimir Putin, just the latest in a series of deadly incidents raising concern. Ron Claiborne reports. | ABC World News Tonight with David Muir