Treaty of economic, social and cultural collaboration and collective self- defenceBrussels Treaty • November 23rd, 2015
Contract Type FiledNovember 23rd, 2015between His Majesty in respect of the United Kingdom of Great Britain and Northern Ireland, His Royal Highness the Prince Regent of Belgium, the President of the French Republic, Her Royal Highness the Grand Duchess of Luxembourg, and Her Majesty the Queen of the Netherlands