Before going to Iberia , Napoleon decided to address several lingering issues with the Russians . At the Congress of Erfurt in October 1808 , Napoleon hoped to keep Russia on his side during the upcoming struggle in Spain and during any potential conflict against Austria . The two sides reached an agreement , the Erfurt Convention , that called upon Britain to cease its war against France , that recognized the Russian conquest of Finland from Sweden , and that affirmed Russian support for France in a possible war against Austria " to the best of its ability "
Congress of Erfurt
Congress of Erfurt
Napoleon