In March 2000, US President Bill Clinton visited India and held bilateral and economic talks with Prime Minister Vajpayee. During this visit, the Indo-US Science & Technology Forum was established.  U.S. defense sales have increased significantly over the past two decades, with up to $22 billion in weapons sold since 2007. In the late 1970s, when Janata party leader Morarji Desai became prime minister, India improved its relations with the United States, now led by Jimmy Carter, although carter signed an order in 1978 banning the export of nuclear materials to India due to India`s non-proliferation record. In the 1970s, Link-16 had a limited bandwidth that could only perform voice transmission, which was complex to plan for each mission, had high latency, and suffered from cyber-vulnerabilities and electronic vulnerabilities. The allied military – which have signed all beca and CISMOA (Communication, Interoperability and Security Memorandum Agreement, equivalent to the COMCASA specific to India) – use the tactical cloud, so are linked to the fight against a common enemy. The U.S. wants India to move away from Russian devices and platforms, believing it could reveal its technology and information to Moscow. So far, India has encouraged the purchase of the S-400 anti-aircraft missile system from Russia, which has been a sore point for US interlocutors.
For its part, India is wary of Pakistan`s deep-seated relationship with the Pentagon and Washington`s dependence on Rawalpindi for access to Afghanistan and its exit strategy. . . .