Ukraine's Security Services (SBU) have claimed responsibility for a bomb attack in Moscow that killed Lieutenant General Igor Kirillov, a senior Russian military figure in charge of nuclear, chemical, and biological defense. The attack involved a bomb hidden in a scooter, detonated remotely as Kirillov and his assistant left an apartment building. Ukrainian prosecutors had previously charged Kirillov with using banned chemical weapons against Ukraine. The SBU described him as a legitimate target and a war criminal. Russian investigators are currently examining the scene, and the Russian government has not officially responded to Ukraine's claim. However, there is speculation that Russia may retaliate with strikes against Ukraine, as they have done in the past under similar circumstances. The incident highlights the ongoing tensions and the potential for further escalation between the two countries.