South Korean President Park Geun-hye meets President Obama on Tuesday in Washington. The South Koreans created a slogan for the summit, “Bound by trust, forward together,” the first time they have adopted an English language motto for an event of this sort. During her visit, Park may talk about “the most successful alliance in history”—the mutual defense pact turns 60 this year—but there is not as much trust between South Korea and the US as there needs to be.