In addition to the exemptions granted under this chapter, there shall also be specifically exempted from state and local sales and use taxes defined, levied, or calculated under section 32.085, sections 144.010 to 144.525, sections 144.600 to 144.761, or section 238.235, all tangible personal property included on the United States munitions list, as provided in 22 C.F.R. § 121.1, sold to or purchased by any foreign government or agency or instrumentality of such foreign government which is used for a governmental purpose.