The Treaty of Breda which ended the Second Anglo-Dutch War in July 1667 failed to remove the root causes of the long-standing Anglo-Dutch rivalry, which included colonial quarrels, including the exclusion of the English traders from Dutch colonies and the English occupation of the former Dutch New Netherland colony, and English enforcement of the Navigation Act. Although tensions between the two nations lessened between 1668 and 1670, the desire of Louis XIV to acquire all or a substantial part of the Spanish Netherlands and neutralise the Dutch Republic, led to his subsidising Charles II and to an unprovoked and unsuccessful English attack on the Dutch Smyrna fleet in March 1672. An English declaration of war against the Netherlands in the same month began the Third Anglo-Dutch War, and this was followed by a French declaration of war against the Dutch in May 1672. Shortly after, a combined Anglo-French fleet was formed, commanded by James, Duke of York the Lord High Admiral of England with 62 major warships and Jean, Comte d'Estrées with 30 major warships forming the van squadron.