Intense Biography Cover Design

My upcoming book is a biography drawn from real-world episodes of sabotage, espionage, counter-intelligence, cyber intelligence, and hybrid warfare. The narrative is factual, high-stakes, and I need the cover to reflect that same serious, intense atmosphere without drifting into sensationalism... (Budget: €30 - €250 EUR, Jobs: Adobe Illustrator, Adobe InDesign, Adobe Photoshop, Book Cover Design, Graphic Design, Illustrator, Photoshop, Typography)