arms embargo on Indonesia, followed by the EU in September 1999, but the Indonesian F-16s were still operational and underwent a Falcon UP program with the assistance from Dutch companies, after the European Union lifted their arms embargo in January 2000. The US embargo was lifted in 2004, and the US has since delivered 24 refurbished F-16C/Ds to add to ten older F-16A/B models. The total estimated cost was $750 million, and that included an upgrade to near Block 52 standard. With the retirement of its F-5 Tiger IIs, the Indonesian Air Force was seeking additional airplane types well-suited for the air defense role. In February 2018, Indonesia signed a purchase contract to buy 11 Sukhoi Su-35 fighters in a US$1.1 billion deal. Lockheed Martin was offering the F-16V Viper as a cheaper alternative. Indonesia is currently upgrading its F-16A/Bs under the "EMLU-Falcon STAR" project. The Indonesian Air Force has plans to purchase 32 F-16V Block 70/72s in 2020-2024 for the MEF (Minimum Essential Force) Phase III program, but the Ministry of Defense is interested in purchasing F-15EX Eagle IIs and Dassault Rafales instead. The Indonesian Foreign Military Sales program is known as PEACE BIMASENA. Pakistan Pakistan was an early customer of the F-16, seeking to counter a heavy Soviet presence in Afghanistan, in addition to countering its traditional rival, India. An initial order for 40 aircraft was delivered in two installments, and led to a further order for 71 more F-16A/B Block 15 OCU aircraft. Due to political developments relating to Pakistan's nuclear program, these aircraft were embargoed before delivery. 28 remained in storage while other buyers were sought (and a 10-year lease to the Royal New Zealand Air Force fell through) due to a change in government, but ultimately it was decided that the aircraft would be put into service with the US Air Force and Navy as aggressor aircraft. The remaining aircraft were not completed. The Pakistani Foreign Military Sales program is known as PEACE GATE. In November 2006, the Pakistan Air Force signed a Letter of Acceptance (LOA) for 18 new-built F-16C/D Block 52s, 28 F-16A/B Block 15s and 60 Mid-Life-Update M3 Tape modules/kits as part of a $5.1billion deal including fighter aircraft, their related infrastructure, training and ammunition. Deliveries of the F-16A/Bs were expected to begin in 2007, while the initial F-16C/Ds would likely be received sometime in late 2008 or early 2009. The procurement