i'm serena marshall, cbs news washington. >>> it's thursday, march 9th, 2023. this is the "cbs morning news." breaking overnight, senator mitch mcconnell hospitalized. the gop leader falls at a private dinner in washington, d.c. the latest on what happened. >>> also breaking overnight, deadly missile barrage. russia carries out its largest attack in ukraine in weeks. a look at the damage and destruction across the war-torn country. >>> back-to-back storms. california is bracing for more heavy snow and rain. the new threat following a recent winter wallop. >>> good morning, and good to be with you. i'm anne-marie green. breaking overnight, senate minority leader mitch mcconnell was hospitalized and treated after tripping and falling at a washington, d.c., hotel. a spokesman says the 81-year-old republican tripped at a hotel during a private dinner. there's no word on his condition. mcconnell, who is a childhood survivor of polio, tripped and fell at his home in kentucky in 2019. he underwent surgery for a fractured shoulder then. >>> also breaking overnight, rus