Treaty of Neuilly-sur-Seine
Stanchov was acting Prime Minister from 12–16 March 1907 following the assassination of Dimitar Petkov and before the accession of Petar Gudev. He also served as foreign minister in two cabinets. He actively opposed Bulgaria's entry in World War I, for which he was temporarily removed from duty. In 1919, after Bulgaria's defeat, he was the secretary of the Bulgarian delegation at the signing of the Treaty of Neuilly-sur-Seine. He resigned from his diplomatic positions in 1924 due to disagreements with the right-wing policies of Aleksandar Tsankov's cabinet.