Ultimately, the minister's strong support from Elizabeth prevailed. His faultless diplomacy, and an auxiliary Russian corps of 30,000 men sent to the Rhine, greatly accelerated the peace negotiations leading to the Treaty of Aix-la-Chapelle (18 October 1748). By sheer tenacity of purpose, Bestuzhev had extricated his country from the Swedish imbroglio; reconciled his imperial mistress with the courts of Vienna and London; enabled Russia to assert herself effectually in Poland, the Ottoman Empire and Sweden; and isolated the King of Prussia by forcing him into hostile alliances. All this would have been impossible without the steady support of Elizabeth who trusted him completely in spite of the Chancellor's many enemies, most of whom were her personal friends.