In 2007, India and Russia agreed to jointly develop the Fifth Generation Fighter Aircraft Programme (FGFA) for India. In September 2010, it was reported that India and Russia had agreed on a preliminary design contract where each country was to invest $6 billion; development of the FGFA was expected to take 8–10 years. The agreement on the preliminary design was to be signed in December 2010. India planned on acquiring a modified version for its FGFA programme. It originally planned on buying 166 single-seat and 48 two-seat fighters, but later changed it to 214 single-seat fighters, and later reduced its purchase to 144 fighters by 2012. In early 2018, India pulled out of the FGFA project, which it believed did not meet its requirements for stealth, combat avionics, radars and sensors by that time. This news led some observers to question the future of the whole Su-57 project.