Russia says Ukrainian troops crossed into its territory and launched ‘massive attack’  CNNUkraine’s Army Surprises Russia With Move Across Border  The Wall Street JournalWar Death Toll Rises as Russia Battles Border Incursion From Ukraine  BloombergRussian Offensive Campaign Assessment, August 6, 2024  Institute for the Study of WarUkraine Launches Rare Cross-Border Ground Assault Into Russia  The New York Times