Core Viewpoint - The statement from Dmitry Medvedev indicates that Russia is prepared to respond with tactical nuclear weapons if Ukraine employs a "dirty bomb" [1] Group 1: Military Implications - Medvedev's comments suggest a significant escalation in military rhetoric, highlighting the potential for nuclear engagement in response to perceived threats from Ukraine [1] - The mention of tactical nuclear weapons indicates a shift in Russia's military strategy, emphasizing readiness to use advanced weaponry in regional conflicts [1] Group 2: Regional Conflict Risks - Medvedev warns that the only risk for Russia regarding the Israel-Iran conflict is the possibility of it escalating into a global war, indicating concerns about broader geopolitical instability [1] - The statement reflects the interconnectedness of regional conflicts and their potential implications for global security dynamics [1]