Bulgaria joined World War II siding with the Axis in an attempt to solve its own "national question" and fulfill the aim of "Greater Bulgaria", especially in the area of Macedonia (where much territory was lost in the Second Balkan War) and Western Thrace (former Bulgarian state international recognized territory lost to Greece in the Treaty of Neuilly).
Bulgaria entrou na Segunda Guerra Mundial a carón do Eixe tentando resolver a súa "cuestión nacional" e satisfacer os *anceios da Grande Bulgaria, especialmente no área de Macedonia (onde perdera moito territorio na Segunda Guerra Balcánica) e Tracia Occidental (perdida a favor de Grecia polo Tratado de Neuilly).