The enemy had achieved in South Vietnam neither military nor psychological victory. For the South Vietnamese the Tet offensive served as a unifying catalyst, a Pearl Harbor. Had it been the same for the American people, had President Johnson discerned the same support behind him that Thieu did behind him, and had he acted with forcefulness, the enemy could have been induced to engage in serious and meaningful negotiations. Unfortunately, the enemy scored in the United States the psychological victory that eluded him in Vietnam, so influencing President Johnson and his civilian advisors that they ignored the maxim that when the enemy is hurting, you don't diminish the pressure, you increase it.