What's the difference between the similar-looking Soviet Su-27 and MiG-29 fighters?
At first glance, the Soviet Su-27 and MiG-29 fighters might seem like two peas in a pod. This is partly true. However, there are actually quite a few differences between the Sukhoi and Mikoyan. At least one of these is truly fundamental, even though both aircraft are fourth-generation fighters. So what is this difference?