When Bonnet first learned of the German attack on Poland at 8:20 a.m., on 1 September 1939, his first reaction was to contact the Italian Ambassador to France, Baron Raffaele Guariglia, and informed him that France had accepted Mussolini's mediation offer. Bonnet then ordered François-Poncet to see Mussolini about when the peace conference could begin. Bonnet argued very strongly in the cabinet against a French declaration of war and instead urged that the French take up Mussolini's mediation offer; if the Poles refused to attend Mussolini's conference (which was widely expected since Mussolini's revised peace plan on 1 September called for an armistice, not for the removal of German troops from Poland, the major Polish precondition to accepting the Italian plan), the French should denounce the Polish alliance. Later, that same day, Bonnet ordered the Ambassador in London, Charles Corbin, to tell the British that Mussolini's peace offers had been accepted.