Engine development on K 9 and K 10 started in August 2012 by Gas Turbine Research Establishment (GTRE). A tender of joint venture on development of the engine was issued to engine manufacturers in 2015 for a foreign partner to help in developing the engine by combining both Kaveri engine technology with the joint-venture partners engine to create a 110–125 KTN thrust engine.[95] On 19 February 2015 at the Aero India 2015 Tamilmani told reports that a tender of joint venture on development of the engine was issued to General Electric, Pratt & Whitney, Rolls Royce, Snecma, Eurojet, NPO Saturn, Klimov and IHI to use current engine technology by combining Kaveri engine technology with JV engine to produce an engine capable of producing thrust of 110–125 kN.[96][97][98][99] At Aero India 2015, Tamilmani confirmed the possibility of combining Kabini Core-engine with joint venture partner core engine I.e. with EJ 200, Snecma M88, NPO Saturn AL-31-117 or General Electric F414 to produce 110–125 KN of thrust . France made an unsolicited call to help in development of AMCA's engine with full access to the Snecma M88 engine and other key technology, while United States has offered full collaboration in the engine development with full access to the F-414 and F-135.[100][101][102] During U.S President Barack Obama's visit on 25–27 January he pointed out a possibility of joint-development of a Hot-Engine, an advanced variable cycle engine capable of performing in hot weather conditions like those of India.[103] Rolls-Royce was also pushing a deal for a joint venture engine by offering the co-development of a new engine based on the Kaveri and EJ2XX engines.[104] In November, during the visit of Indian prime minister Narendra Modi to UK, Rolls-Royce again pushed the EJ2XX engine in a joint development proposal despite favouritism towards General Electric for a JV programme.[105][106] In December U.S government made sign of support for full fledge transfer of technology including many classified information of F-414 engine in joint venture engine development.[107][108][109] During Indian defence minister Manohar Parrikar's visit to the United States, the U.S defence secretary Ashton Carter and Parrikar discussed the matter of joint development of the engine