After Bismarck’s forced departure in 1890 (after a clash with the new Kaiser Wilhelm II over the scope of his authority), his system of overlapping alliances was maintained only tenuously. Leo von Caprivi, the next Chancellor, complained that while Bismarck had been able to keep five balls in the air simultaneously, he had difficulty controlling two. The Reinsurance Treaty with Russia was not renewed in 1891 on the ground that it was partly incompatible with the Austrian alliance—which, in Bismarck’s view, had been precisely its utility. Almost inevitably, France and Russia began exploring an
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