"Gneisenau" rendezvoused with "Scharnhorst" in Nagasaki, Japan, where they received a full supply of coal. They then sailed south, arriving in Truk in early July where they would restock their coal supplies. While en route, they received news of the assassination of Archduke Franz Ferdinand, heir to the throne of Austria-Hungary. On 17 July, the East Asia Squadron arrived in Ponape in the Caroline Islands. Spee now had access to the German radio network and he learned of the Austro-Hungarian declaration of war on Serbia on 28 July and the Russian mobilization against Austria-Hungary and possibly Germany on 30 July. On 31 July, word came that the German ultimatum that Russia demobilize its armies was set to expire. Spee ordered his ships be stripped for war. On 2 August, Wilhelm II ordered German mobilization against Russia and its ally, France.