While the early years of the war had significant U.S. casualties, the administration assured the public that the war was winnable and would in the near future result in a U.S. victory. The U.S. public's faith in "the light at the end of the tunnel" was shattered on January 30, 1968, when the NLF mounted the Tet Offensive in South Vietnam. Although neither of these offensives accomplished any military objectives, the surprising capacity of an enemy to even launch such an offensive convinced many in the U.S. that victory was impossible.