One thought, Ken: Germany has a $109 billion surplus with the USA and UK, and total exports of $243 billion (as opposed to just $125 billion to China). Threatening to remove market access to the USA and UK would wreak massive economic and unemployment damage on the German economy.

That would require playing much harder ball with Germany than we ever have post-war, but it certainly fits in with your overall idea of making trade and development more central to our message.