Just wanted to throw a word on the trade deals. The major aspect in the current trade deals that got negotiated in secret (like TPP and TTIP) were not tariffs or trade barriers. Tariffs are currently the lowest they ever been between nations and its more or less just a formality to finally have them completely removed.

What would have a major effect on the world is the new copyright and patent laws and the investor-state arbitration. The world will less be changed from not having those, and by many views for the better. I don't expect China or Russia to try impose harsher copyright and patent laws, destroying ship loads with generic drugs or implement a world-wide investor-state arbitration.