After a two-day visit to Germany, the Bulgarian monarch Tsar Boris returned to Sofia extremely disheartened. The next day, the exhausted ruler went to his country residence in the Rila Mountains, where he stayed until August 23. Returning to the capital, the Tsar immediately complained of feeling unwell and, after only a few hours in his office while reviewing official papers, lost consciousness. The first diagnosis by the doctors was: the Tsar had a severe liver disease…