LVIV, UKRAINE - APRIL 18: Firefighters battle a blaze after a civilian building was hit by a Russian missile on April 18, 2022 in Lviv, Ukraine. At least six people were killed and eight wounded in missile strikes in different areas of the city, according to the governor. (Photo by Joe Raedle/Getty Images)

(AP) – When Vladimir Putin sent troops into Ukraine in late February, the Russian president vowed his forces would not occupy the neighboring country. But as the invasion reached its 100th day on Friday, Russia seemed increasingly unlikely to relinquish the territory it has taken in the war. The ruble is now an official currency in the southern Kherson region. Residents there and in Russia-controlled parts of a neighboring region are getting offered Russian passports. The Kremlin-installed administrations in both regions have talked about plans to become part of Russia. In a video marking the first 100 days of fighting, Ukrainian President Volodymyr Zelenskyy indicated that his country would not submit easily to Russian control.