and international standards and would also include new weaponry for all variants. A further 12 KT-1b trainers were also ordered in 2006. Until 2008, the Indonesian Air Force had only purchased four types of missiles: KS-1 Komet, Vympel K-13, AIM-9 Sidewinder and AGM-65 Maverick. Starting from 2008, it started receiving more advanced Russian made Vympel R-73 and R-77 air-to-air missiles for its new Su-27 and Su-30 fighters. Also, a limited number of Kh-29, Kh-31 and Kh-59 air-to-ground missiles were delivered for the Su-30s. Local weapons are being developed such as P-100 air-to-ground bomb manufactured by PT Dahana and PT Sari Bahari Malang, East Java. P-100 has been successfully tested in Su-27 and Su-30 for ground attack missions. Large-scale production has received certification from Ministry of Defence. Minimum Essential Force (MEF) 2010–present During the visit of US President Barack Obama on 9–10 November 2010, the TNI-AU was offered 24 ex-USAF F-16 Block 25 aircraft as part of the Peace Bima-Sena II agreement. In October 2011, the House of Representatives approved the grant. The jets will be upgraded similar to the latest Block 50/52 variant with payment. The TNI-AU is also progressing with the reactivation of all 10 units of F-16 Block 15 OCU, which resulted in the reactivation of TS-1606, TS-1609 and TS-1612 recently. To replace the Fokker F-27s, the TNI-AU has ordered nine Spanish CASA C-295 in joint production with PT. Dirgantara Indonesia. New unmanned aerial vehicles will also be purchased to strengthen TNI-AU aerial observation and will be based at Supadio Air Force Base, Pontianak, Kalimantan Barat. Starting in 2010, Minister of Defence Purnomo Yusgiantoro stated that TNI-AU will gradually purchase a total of 180 Su-27s and Su-30s to complete the needs of 10 squadrons. India also offered TNI-AU Indian-Russian made BrahMos missiles to equip its Su-27s and Su-30s. Indonesia signed a memorandum of understanding to participate in the South Korean KF-X programme in July 2010 and the terms of agreement was signed in 2011. Indonesia will finance 20 percent of the project and will receive 50 jets in return, while South Korea will get 200 jets. A Defence ministry spokesman claimed that the jet would be more capable than the F-16 but less capable that the F-35. The project was started in 2009 and the first prototype is expected to roll out in the second half of 2020. But payment problems and technical difficulties had caused several delays