F16's are used in many countries. They were developed in the US, but many, many countries use them (some of our NATO partners since the beginning)

Since they were first developed, NATO partners: Belgium, Denmark, Netherlands, Norway Other European countries as soon as the mid-80's: Croatia, Greece, Italy, Poland, Portugal, Romania Middle east since the mid/late 80's: Bahrain, Egypt, Israel, Iraq, Pakistan, Turkey, Jordan, UAE Africa: Morocco, Indonesia, Asia: Singapore, South Korea, Taiwan, Thailand South America: Chile, Venezuela.