Ukrainian strike kills three in Crimea after Kyiv targets St. Petersburg energy, military sites

The strike in Crimea marks a significant escalation in the conflict as it targets Russian-held territory, following retaliatory attacks by Ukraine on energy and military sites in Saint Petersburg. The incident comes amid Russia's major economic forum, heightening tensions and prompting warnings from US Secretary of State Marco Rubio about a heightened risk of further conflict. Ukraine justified its actions as a response to increased Russian attacks on its own soil, suggesting this could lead to more aggressive military engagements on both sides.