Trump wants to impose a 25% tariff on South Korea, but it's been postponed. Will three more weeks be enough time to negotiate? Will there be another extension?

U.S. President Donald Trump said on Tuesday South Korea should be paying for its own military protection and suggested the U.S. ally needed to pay more for the U.S. troop presence there, a day after saying he planned to impose a 25 percent tariff on its imports.