Boeing isn't just saying that they "think" there are illegal subsidies. They're pointing to the WTO's rulings. I guess I could've looked up those particular cases and cited them directly. However, I reckon if they were lying about what the WTO was saying, that wouldn't be difficult for you to find and point to yourself. In fact, we need look no further than the article that started this discussion to verify. Let's look at the actual content of the argument instead of relying on circumstantial ad hominem.