Sarmatia, you and I had a bit of a debate further back about the status of Portugal and her colonies, and I think I have a solution (but it´s big, and before I work any more on it, I want your seal of approval).
In broad lines, Portugal fell into internal unrest and economic mayhem directly after the great war ended, and with governments coming and going, Germany was unable to negotiate a peace settlement, and hence gave up.
So in theory, Germany and Portugal were still at war in 1936, but in a ceasefire. Both nations had ny now came to a silent agreement not to negotiate for peace, but keep matters as they were.
In 1938, Göring however, declares that Portugal is still at war with Germany and demands a peace settlement from Lisbon (he wants the portugese colonies for Mittelafrika). Lisbon might agree, leading to negotiations and some loss of colonies, or disagree, and protest to Berlin.
When they protest to Berlin, Germany can eaith just make some talking, leading to an invasion of the portugese colonies by mittelafrika (and war between Germany and Portugal) or side with Portugal (to stamp down on Göring), or Göring (to stamp down on Portugal). Exactly what will happen later I´m not sure of, but possibly a yes/no choice for Portugal leading to war or loss of colonies, and a yes/no for Mittelafrika which will either remove Göring or lead to an uprising against Germany.
How does that sound?