All coverage
Rand Paul blocks bipartisan effort to swiftly pass Ukraine aid
By Ted Barrett & Ali Zaslav
Senate falters in push to pass $40B Ukraine aid
By Connor O'Brien & Jennifer Scholtes
Breaking down the billions of dollars in U.S. military aid to Ukraine
By Artur Galocha & Ruby Mellen
Rand Paul blocks Senate vote to advance Ukraine war aid bill
By Amy Cheng & Eugene Scott