The military supplies promised by the Germans didn't materialize and the "Northern Corps" had to retreat abruptly into Estonia at the end of November 1918. The Estonian Government, faced with a Bolshevik advance, accepted to take the White force into its territory and supply it, in exchange for passing under its control, and this despite the ideological difference between the independence fighters of Tallinn and the Russian White Movement. Under pressure from the British gen. Gough who promised to arrange for Estonian and British military assistance in advance on Petrograd, Nikolai N. Yudenich formed a Government of Northwestern Region of Russia encompassing Petrograd, Novgorod and Pskov governorates that officially recognised Estonian independence.