Worried UN meets on Ukraine hours after Russian strikesUNITED NATIONS (AP) — The U.N. General Assembly started debating Monday whether to demand that Russia reverse course on annexing four regions of Ukraine — a discussion that came as Moscow’s most extensive missile strikes in months alarmed much of the international community anew.Ukrainian Ambassador Sergey Kyslytsya said some of his own close relatives were imperiled in a residential building, unable to take cover in a bomb shelter.Russia has said it was retaliating for what it called a Ukrainian “terrorist” attack Saturday on an important bridge, and Ambassador Vassily Nebenzia told the assembly that Moscow had warned that there wouldn’t be impunity for such an act.Ukrainian officials haven’t confirmed that Kyiv was behind the bridge attack or other incidents of apparent sabotage but have said they welcome setbacks for Russia in all territory that it has claimed to annex.Ambassador Feridun Sinirlioğlu, whose country helped the U.N. broker a July deal to get Ukrainian and Russian grain exports flowing, called Monday’s attacks “deeply worrying and unacceptable.”Costa Rican Ambassador Maritza Chan Valverde said the strikes showed “continued and complete disdain for human rights, humanitarian law and international norms.”Hours after the missiles flew, the U.N. assembly gathered to consider responding to Russia’s purported absorption last month of Ukraine’s Donetsk, Luhansk, Kherson and Zaporizhzhia regions."