Ukraine Drone Attack on Industrial City in Russia Kills at Least 13 nytimes.comUkrainian drone strike kills 13 inside Russia, authorities say, in deadliest attack in two years CNNUkrainian drone attack on a Russian city kills 13, with a refinery reportedly hit NBC NewsAt least 13 killed in Ukrainian strike on Russia's Tatarstan region, officials say BBCRussia Says 13 Killed in Ukraine Attack on Tatarstan Energy Hub Bloomberg.com