The UK’s National Audit Office is warning of a £2.9 billion ($3.9 billion) “affordability gap” in the country’s £51 billion nuclear submarine plans. “At this crucial time in the program, the Ministry of Defence needs to ensure it manages its costs, people, contractors and schedule effectively to maintain the Defense Nuclear Enterprise,” the office says. The UK’s new Dreadnought-class submarines will gradually replace the UK’s four ...