Ukrainian forces liberate villages near Kherson, wary of Russian trap

Read MoreRussia has announced they are withdrawing from the key southern city of kherson. But defense analysts have yet to see evidence of large-scale Russian retreat. CBS News correspondent Chris Livesay has more.Russia has announced they are withdrawing from the key southern city of kherson. But defense analysts have yet to see evidence of large-scale Russian retreat. CBS News correspondent Chris Livesay has more.