LyrArc Article Gist
This report from Germany in DW.com says Germany tried to build a softer relationship with Russia during the leadership of Adenauer of CDU and  Brandt of SPD. This continued under Schmidt and Schroeder. Under Merkel of CDU the emotional aspect of the relationship as Russia retreated from Bolshevism and Soviet Union collapsed was lost. Little attention was paid to East Germany and to how the fall of the Soviet Union had affected Russia negatively,and became purely focused on German industry and trade with cheap Russian gas supplies. Even as Germany did not invest in shared burden for defense with the US, and Germany under Merkel increased dependence on Russian gas supplies to 55% with the Nordstream gas pipeline from Russia, and shut down nuclear energy. 

As a result the emotional or mental health aspect of the relationship with Russia of Germany was lost under Merkel. The focus on purely financial aspect of things has been proved wrong both for the economy as physical infrastructure was neglected under Merkel and social infrastructure such as child care and other social aspects of society were sorely neglected. A new broader framework that needs to be built will have to keep this in mind. 

All the hard work and good intentions of the Adenauer and Brandt years has been lost with the short sighted basis of relations based purely on finance and trade under Merkel's leadership. This happened also in the US relationship with China with the relations based purely on finance and trade under Clinton, Bush, Obama proving to be too fragile as they did not protect other social aspects within the two countries as inequality widened and whole segments of society were neglected.