In August 1914, nearly a month after the war broke out, the Bulgarian Prime Minister Vasil Radoslavov declared that Bulgaria would remain neutral.
That, however, was only temporary as the Bulgarian government expected an opportune moment and favorable terms to enter the war and regain its lands.
If Bulgaria entered the war on the side of the Central Powers then Serbia would have been defeated, which could influence the still neutral Romania and Greece.
If Bulgaria allied itself with the Entente it would have disrupted the links of Germany and Austria-Hungary with the Ottoman Empire and would have taken the straits opening a sea route to Russia.
The Entente offered Bulgaria Eastern Thrace to the west of the line Midia-Enos and uncertain guarantees for Macedonia.