German authorities have arrested a Ukrainian man named Vadym Y on suspicion of spying for Russia. Prosecutors allege that the man contacted Russian secret intelligence services through an intermediary starting in July 2025, collecting military intelligence on armored vehicles, ammunition, explosives, and NATO's eastern flank defense facilities. This follows the German military's decision on Wednesday to raise the threat level of Russian sabotage against German forces and facilities to "significant," the second-highest level in its internal threat assessment. Germany has previously accused Russia of launching drone attacks against the country, calling it part of Moscow's "shadow war."