The summit between Obama and Lee was a great success. South Korea and U.S solidified their alliance. Not only they cooperate on military, they also agreed to improve their relation on matters such as politics, economy and culture. President Obama also guaranteed to protect South Korea from North Korean nuclear threat. Based on this staunch alliance, both states are bound to beat the North Korea threat. Both President Obama and president Lee demanded North Korea to give up the nuclear tests and long range missiles. They also demanded North Korea to participate in the upcoming negotiations. The two president showed excellent teamwork. South Korea and U.S should stand together against North Korea and become eternal allies.