Could the U.S. and UK Merge Their Sixth-Generation Stealth Fighter Projects?

There are only three real fifth-generation fighter aircraft currently in operation around the world. They are the U.S.-made Lockheed Martin F‑22 Raptor, the Lockheed Martin F‑35 Lightning II, and the Chinese Chengdu J‑20 Mighty Dragon. Russia has also long touted the capabilities of its Sukhoi Su-57 (NATO reporting name Felon), but …