Treaty of Westminster (1654)

The Treaty of Westminster, concluded between the Lord Protector of the English Commonwealth, Oliver Cromwell, and the States General of the United Netherlands, was signed on 5/15 April 1654.^: 7 The treaty ended the First Anglo-Dutch War (1652–1654). The treaty is otherwise notable because it is one of the first treaties implementing international arbitration as a method of conflict resolution in the early modern era. A secret clause, obliging the States of Holland to enact the Act of Seclusion, played an important part in Dutch internal politics during the First Stadtholderless Period.