Europe's leaders were unable to settle the matter by peaceful compromise. Palmerston's biographer William Baring Pemberton argued that his "failure to understand Bismarck lies at the root of his misunderstanding of the Schleswig-Holstein question, and it derived from an old man's inability to adapt himself to a changing world". Thus Britain was militarily unable to stop Bismarck's armies and misunderstood Bismarck's ambitions. Russian historian V. N. Vinogradov writes: "In place of the former insight came bias in judgments and stubbornness in defending outdated views. Palmerston continued to consider Prussia 'an instrument in the hands of Austria', its army weak and doomed to defeat, and its public to consist of romantically minded students and dreamy professors. And Otto von Bismarck quietly annexed the two Duchies to Prussia, and at the same time the County of Lauenburg".