On June 23, 1608, Pallache met stadholder Maurice of Nassau and the States-General in The Hague to negotiate an alliance of mutual assistance against Spain. On December 24, 1610, the two nations signed the Treaty of Friendship and Free Commerce, an agreement recognising free commerce between the Netherlands and Morocco, and allowing the sultan to purchase ships, arms and munitions from the Dutch.[15] This was one of the first official treaties between a European country and a non-Christian nation, after the 16th-Century treaties of the Franco-Ottoman alliance.