Key developments on Feb. 13 * Ukraine's battlefield lessons drive UK to spend over $545 million on hypersonic, long-range weapons in 2026 * Using Starlink ruse, Ukrainian cyber forces trick Russian soldiers into revealing positions, donating to armed forces * 'Modern Ukrainian technology, battle-tested' — Zelensky unveils 1st drone produced by German-Ukrainian joint venture * Ukraine's Unmanned Systems Forces release footage of strikes on Russian airfield in Crimea, other targets in occupie