Foreign purchases of the F-35 Joint Strike Fighter are slated to account for roughly 40 percent of the next two production lots, a sharp increase, drawing orders from a preponderance of the countries cleared to buy the new combat jet, including a first-ever South Korea purchase. The buys, bundled as foreign military sales, are offsetting reduced orders from F-35 partner nations who contributed to the aircraft's development. The combined orders from JSF partner nations and sales to Israel, Japan and...