F-35 is the best aircraft in the world. The fact that it is expensive does not mean that it always will be. The better the technology of production the cheaper will be its cost.. once again convinced that Trump sent to America by the devil.
The F-35 has been troubled with several unresolved technical bugs. On the other hand, Russia spent just 1% of that amount and developed two vastly superior aircraft (the Sukhoi-35 and the Sukhoi PAK FA).
America should know the power of Russia. I think Russia can make a powerful equipment and weapons to destroy every country in the world. United States and other countries must know how to stop those kind of inventions, nevertheless, all of us can be only a history in this world.