A police officer - the only person to have access to the fence - lays flowers outside the Russian embassy in Berlin on March 23, 2024, a day after a gun attack in Krasnogorsk, outside Moscow. Camouflaged assailants opened fire at the packed Crocus City Hall in Moscow's northern suburb of Krasnogorsk on March 22, 2024, ahead of a concert by Soviet-era rock band Piknik in the deadliest attack in Russia for at least a decade. Russia on March 23, 2024, said it had arrested 11 people - including four gunmen - over the attack on a Moscow concert hall claimed by Islamic State, as the death toll rose to 115 people. (Photo by John MACDOUGALL / AFP)