A service member of the Ukrainian armed forces strokes a dog at combat positions near the line of separation from Russian-backed rebels outside the town of Avdiivka in Donetsk Region, Ukraine January 25, 2022. [Reuters]
U.S. President Joe Biden said on Tuesday he would consider personal sanctions on President Vladimir Putin if Russia invades Ukraine, as Western leaders stepped up military preparations and made plans to shield Europe from a potential energy supply shock.