三國協約
At the same time, Grey met with opposition from the Russian Ambassador who warned that a conference with Germany, Italy, France, and Britain serving as the mediators between Austria and Russia would break apart the informal Triple Entente. Sazonov accepted Grey's proposal for a conference despite his reservations about the dangers of splitting the Triple Entente, Grey wrote to Sazonov that Britain did not have a cause to war with Serbia, but subsequent developments might drag Britain into the conflict.