A Ukrainian soldier is seen at fighting positions on the line of separation from pro-Russian rebels near Luhansk, Ukraine, Friday, April 16, 2021. Growing cease-fire violations and a massive Russian military buildup are causing tensions to rise in the conflict in eastern Ukraine, where more than 14,000 people have died in seven years of fighting between forces from Kyiv and separatists loyal to Moscow. (AP Photo/Efrem Lukatsky)