Bonnet went on to advocate as his preferred solution to the crisis the neutralization of Czechoslovakia with wide-ranging autonomy for the Sudetenland, but he was prepared as a "last resort" to accept a plebiscite on the Sudetenlanders joining Germany. During the same speech, Bonnet "expressed great indignation with the Czechs who, it seems, mean to mobilise without consulting the French... he has therefore given a broad hint to Beneš that France may have to reconsider her obligations", and that "we are not ready for war and we must therefore make the most far-reaching concessions to the Sudetens and to Germany". At a summit meeting in London with the leading British ministers on 18 September, Bonnet and Daladier agreed formally to the idea of ceding the Sudetenland to Germany, but pressed strongly as the price for making such a concession, a British guarantee of the remainder of Czechoslovakia.