Ukraine president acknowledges military incursion into Russia as fighting continues CBS NewsKursk attack will pressure Russia and ‘restore justice,’ Zelenskiy says ReutersUkraine’s Russia Incursion Faces Dilemma After Quick Gains The Wall Street JournalUkrainian Troops Are Digging Trenches In Russia’s Kursk Oblast. It’s A Sign They Plan To Stay. ForbesKursk Nuclear Warning Issued by UN Newsweek