Polish Prime Minister Donald Tusk has confirmed that an explosion that destroyed a section of railway track on the strategic Warsaw-Lublin line was an act of sabotage, calling it a deliberate strike on national security. “An unprecedented act of sabotage” “The explosion of an explosive device destroyed the railway track,” Tusk wrote on X on Monday, adding that prosecutors and emergency services were working at the scene and that additional damage had been found further along the same route.