The U.S. Air Force has secretly designed, built and flown at least one prototype of its enigmatic next-generation fighter jet, the service’s top acquisition official confirmed to Defense News on Sept. 14.

President Donald Trump and Democratic rival Joe Biden both say they want to pull U.S. forces out of Iraq and Afghanistan. But their approaches differ, and the outcome of the Nov. 3 election will have long-term consequences not only for U.S. troops, but for the wider region.

Although it has neither the desire nor the financial or military capacity to actually displace the United States in the Middle East, Russia has become adept at planting itself firmly in the middle of crises and conflicts and establishing itself as an indispensable intermediary at relatively little cost. This has …