Inside the tension that drove Trump’s South Korea alliance from ‘historic new era’ to military pullback

President Donald Trump has ordered a reduction in major joint military exercises with South Korea, a decision that comes after Seoul declined to back American military operations against Iran. The sudden shift occurs just three days after Secretary of State Marco Rubio praised South Korea as an "indispensable partner" and declared a "historic new era" of bilateral cooperation following Trump's state visit to Seoul last autumn.