A shekara ta 1808, Napoleon da Czar Alexander sun hadu a taron Erfurt don kiyaye kawancen Rasha da Faransa. Shugabannin suna da kyakkyawar dangantaka ta abokantaka bayan ganawarsu ta farko a Tilsit a shekara ta 1807. Amma, a shekara ta 1811, tashin hankali ya karu kuma Alexander ya kasance a karkashin matsin lamba daga masarautar Rasha don karya kawancen. Babban damuwa a kan dangantakar da ke tsakanin kasashen biyu ya zama cin zarafin Tsarin Kasashen Turai ta hanyar Rasha, wanda ya sa Napoleon ya yi barazanar Alexander tare da mummunan sakamako idan ya kafa kawance da Birtaniya. Tambaya: A wace shekara ne ya fara ƙaruwa?
Shekaru 1811