John Bolton

John Bolton's career is defined by his high-level government service across multiple Republican administrations. He served every Republican president from Ronald Reagan through Donald Trump, holding key foreign policy and national security posts. His tenure as National Security Advisor, though brief, placed him at the center of major international negotiations, including summits with North Korea's Kim Jong Un and confrontations with Russia's Vladimir Putin. His bestselling memoir became a lightning rod for debate about the Trump administration's foreign policy.