"Throughout our history, we've learned this lesson: When dictators do not pay a price for their aggression, they cause more chaos; they keep moving; and the costs, the threats to the America—and America, to the world keeps rising. That's why the NATO alliance was created: to secure peace and stability in Europe after World War II. The United States is a member, along with 29 other nations. It matters. American diplomacy matters. American resolve matters."