Ukrainians take shelter in a metro station after air raid sirens alarm in Kiev, Ukraine, 24 February 2022. Russian troops launched a major military operation on Ukraine on 24 February, after weeks of intense diplomacy and the imposition of Western sanctions on Russia aimed at preventing an armed conflict in Ukraine. Martial law has been introduced in Ukraine, explosions are heard in many cities, including Kiev. (Photo by EPA/EFE/Stringer)
