SEOUL, South Korea (AFP) — The US and South Korea on Monday kicked off their largest ever joint air exercise, an operation North Korea has labelled an “all-out provocation”, days after Pyongyang fired its most powerful intercontinental ballistic missile. The five-day Vigilant Ace drill — involving 230 aircraft, including F-22 Raptor stealth jet fighters, and tens of thousands of troops — began Monday morning, Seoul’s air force said. Pyongyang over the weekend blasted the drill, […]