After 16 years, the post-Merkel era is finally upon us. Social Democratic leader Olaf Scholz is taking the mantle to form Germany's first three-party coalition since the 1950s. How will it work? How compatible are the Greens to his left and the liberal FDP to his right? Berlin's loosening or tightening of the purse strings in these uncertain times is sure to dictate the tone at home and in Brussels.