Said in another way, the browser will not send a cookie with the secure flag set over an unencrypted HTTP request. By setting the secure flag, the browser will prevent the transmission of a cookie over an unencrypted channel.
A cold war or cold warfare is a state of conflict between nations that does not involve direct military action but is pursued primarily through economic and political actions, propaganda, acts of espionage or proxy wars waged by surrogates.
Reading 2: The Cold War Begins. Following World War II, the United States entered into a prolonged conflict with the Soviet Union known as the Cold War. Rather than involving direct combat, the Cold War was characterized by political tension and distrust, arms competition, and the threat of nuclear attack.