The Xindi incident , also known the Xindi crisis or the Xindi war was a series of events lasting nearly a year, from March 2153 to February 2154, involving the Enterprise (NX-01)'s attempt to save Earth from destruction by the Xindi. It was a major turning point in the Temporal Cold War, and the incident also helped pave the way for the creation of the Coalition of Planets, and later the United Federation of Planets. (ST reference: Star Trek Encyclopedia)