The situation degenerated into open warfare even without the King having the necessary funds. Henry of Navarre again sought foreign aid from the German princes and Elizabeth I of England. Meanwhile, the solidly Catholic people of Paris, under the influence of the Committee of Sixteen, were becoming dissatisfied with Henry III and his failure to defeat the Calvinists. On 12 May 1588, the Day of the Barricades, a popular uprising raised barricades on the streets of Paris to defend the Duke of Guise against the alleged hostility of the king, and Henry III fled the city. The Committee of Sixteen took complete control of the government, while the Guise protected the surrounding supply lines. The mediation of Catherine de'Medici led to the Edict of Union, in which the crown accepted almost all the League's demands: reaffirming the Treaty of Nemours, recognizing Cardinal de Bourbon as heir, and making Henry of Guise Lieutenant-General.