Noël François Bertrand In 1808 , Napoleon and Czar Alexander met at the Congress of Erfurt to preserve the Russo-French alliance . The leaders had a friendly personal relationship after their first meeting at Tilsit in 1807 . By 1811 , however , tensions had increased and Alexander was under pressure from the Russian nobility to break off the alliance . A major strain on the relationship between the two nations became the regular violations of the Continental System by the Russians , which led Napoleon to threaten Alexander with serious consequences if he formed an alliance with Britain
Congress of Erfurt
Congress of Erfurt
Napoleon