A few months later he was appointed ambassador in London (March 1906), but in May, on the fall of Sidney Sonnino's ministry and the return of Giolitti to power, he was again summoned to the Consulta (the Foreign Ministry). He continued the policy of improving relations with Austria-Hungary, which did not contribute to his popularity. After the Bosnian crisis and the annexation of Bosnia-Herzegovina by Austria-Hungary, his imprudently worded speech at Carate created the illusion that Italy was to be compensated, perhaps by the cession of the Trentino, and the disappointment when nothing of the kind materialized greatly weakened his prestige. He remained in office until the fall of Giolitti in December 1909.