The United States (US) has approved the “release and export” of a $686 million support package to upgrade Pakistan’s F-16 fighter aircraft, according to letters sent by the US Defense Security Cooperation Agency (DSCA) to Congress. The DSCA notification, issued under Section 36(b) of the Arms Export Control Act, states that Congress must be informed in advance of certain proposed arms sales. The agency said the package is intended “to retain interoperability with US...