London (CNN Business)Happy Monday. A version of this story first appeared in CNN Business' Before the Bell newsletter. Not a subscriber? You can sign up right here.A "phase one" trade dealBut investors are still digesting what is and isn't included in the deal, which lowers the temperature after a fraught year and a half but leaves markets in the dark on what comes next."The ['phase one'] trade deal is positive for the outlook relative to continued trade war escalation, but there is still a lot of uncertainty," Jim O'Sullivan, chief US macro strategist at TD Securities, said in a note to clients.