Ukrainian President Volodymyr Zelensky gave a competing ceasefire proposal to Russian President Vladimir Putin shortly after a Ukrainian drone hit a residential high-rise in Moscow.

Ukraine has drastically stepped up its long-range drone campaign against Russia this year, mostly targeting its oil infrastructure. Its attack on Monday was an anomaly, breaching the capital’s air defenses and hitting the apartment building but causing no casualties, Moscow Mayor Sergei Sobyanin said. The attack came just days ahead of Russia’s annual Victory Day parade in Red Square, commemorating its victory over Nazi Germany in World War II.