North Korea has issued nuclear war threats against South Korea, and the future of the entire peninsula hangs in a delicate balance. But one woman is determined to bring these two countries together again before their hostile antics blow them both apart.

Newly-elected South Korean President Park Geun-hye is the first female president in a male-dominated society, and she has included unification as one of the half-dozen goals she aims to accomplish during her tenure. But with pressing threats from the North, unification is no longer a goal but a top priority-for both South Korea and its...