South Korea's new president, Lee Jae Myung, will face a pivotal moment on Monday when he meets U.S. President Donald Trump in Washington for their first summit, as the countries' decades-old alliance strains to confront rapid geopolitical changes.

President Donald Trump is threatening to deploy National Guard troops in more cities across the U.S.

The White House says National Guard activations in 19 states are unrelated to President Donald Trump’s push to expand Washington, D.C.’s federal crime crackdown to other cities.

Ever since Donald Trump orchestrated a federal takeover of Washington, D.C.’s law enforcement, complete with the National Guard being shipped in from at least three red states, defenders of the nation’s capital have painstakingly demonstrated this is a political stunt and is not about stopping crime.