Example image of eyePlorer eyePlorer map for 'Declaration of war': Nation Speech act War Head of state Sovereignty Covert operation Letter of marque Mercenary Privateer Hague Conventions (1899 and 1907) United Nations United Nations Charter Terrorism War on Drugs Epic of Gilgamesh Public international law Treaty France Kellogg–Briand Pact League of Nations Paris World War I World War II 1950 June 25 Korean War North Korea South Korea Soviet Union United Nations Security Council United States Harry S. Truman June 29 News conference President of the United States Gulf War Iraq United Nations Security Council resolution United Nations Security Council Resolution 678 Chivalry Cornelius van Bynkershoek William Edward Hall Manuel Noriega Declaration of war by the United States German declaration of war against the Netherlands List of ongoing conflicts United Kingdom declaration of war on Japan (1941) Clarigation List of international declarations List of wars extended by diplomatic irregularity