Turkey is one of eight countries—along with the United Kingdom, Canada, Netherlands, Italy, Denmark, Norway, and Australia—partnering with the United States on the F-35 Joint Strike Fighter program. Turkey plans to purchase up to 116 F-35s, 90 for delivery over an estimated 10-year period (2014–2023), that are jointly assembled and/or developed by firms from the various JSF partners. The cost is estimated to be at least $11 billion and could exceed $15 billion, given continued cost inflation on the program. The Pentagon decided to end the F-35 deal by July 31, 2019.