Megiddo: The Omega Code 2

Stone Alexander is a disturbed boy filled with murderous rage against his brother. When his father ships him off to military school, Stone falls under the sway of an instructor known as the Guardian (Udo Kier), who grooms him to become the next Antichrist. As an adult, Stone (Michael York) becomes a powerful military leader who plots to take over the world, while his brother (Michael Biehn) leads the charge to save humanity from destruction.