Tensions between the two rival governments increased rapidly. To demonstrate his support, Khomeini called for demonstrators to occupy the streets throughout the country. He also sent a letter to American officials warning them to withdraw support for Bakhtiar. Bakhtiar became increasingly isolated, with members of the government (including the entire Regency Council) defecting to Khomeini. The military was crumbling, with its leadership completely paralyzed, unsure of whether to support Bakhtiar or act on their own, and rank-and-file soldiers either demoralized or deserting.