During the campaign, Bonaparte became increasingly influential in French politics. He founded two newspapers: one for the troops in his army and another for circulation in France. The royalists attacked Bonaparte for looting Italy and warned that he might become a dictator. All told, Napoleon's forces extracted an estimated $45 million in funds from Italy during their campaign there, another $12 million in precious metals and jewels; atop that, his forces confiscated more than three-hundred priceless paintings and sculptures. Bonaparte sent General Pierre Augereau to Paris to lead a coup d'état and purge the royalists on 4 September—Coup of 18 Fructidor. This left Barras and his Republican allies in control again but dependent on Bonaparte, who proceeded to peace negotiations with Austria. These negotiations resulted in the Treaty of Campo Formio, and Bonaparte returned to Paris in December as a hero. He met Talleyrand, France's new Foreign Minister—who later served in the same capacity for Emperor Napoleon—and they began to prepare for an invasion of Britain.