U.S. President Donald Trump's abrupt order to reduce U.S.-South Korean military exercises reflects his renewed interest in North Korean leader Kim Jong Un and widening disputes with Seoul, which will make alliance coordination more turbulent as South Korea strengthens its own forces, although neither an alliance rupture nor a rapid U.S.-North Korean diplomatic breakthrough is likely. On Aug. 18, U.S. Forces Korea commander Gen. Xavier Brunson made an unannounced visit to the South Korean defense ministry as the Pentagon said it was implementing Trump's directive to curb allied military drills he announced in a social media post on Aug. 16, hours before annual Ulchi Freedom Shield military exercises were scheduled to begin. In Trump's post, which was apparently issued without first consulting Seoul, he instructed Secretary of Defense Pete Hegseth to "substantially reduce" joint military exercises with South Korea.