(Bloomberg) -- As the US and UK launch airstrikes to stop Iran-backed Houthi rebels from attacking ships in the Red Sea, China again finds itself happily sitting on the sidelines.Most Read from BloombergUS Economy Set for Another Cash Boost If Congress Backs Tax DealApple to Shutter 121-Person San Diego AI Team in ReorganizationBiden Says US Doesn’t Support Taiwan Independence After VoteNvidia’s Red-Hot 2024 Start a Bright Spot as S&P 500 Eyes RecordIt’s not because the world’s second-biggest ec