War II: Battle of Savo Island: Allied naval forces protecting their amphibious forces during the initial stages of the Battle of Guadalcanal are surprised and defeated by an Imperial Japanese Navy cruiser force. 1944 – The United States Forest Service and the Wartime Advertising Council release posters featuring Smokey Bear for the first time. 1944 – Continuation War: The Vyborg–Petrozavodsk Offensive, the largest offensive launched by Soviet Union against Finland during the Second World War, ends to a strategic stalemate. Both Finnish and Soviet troops at the Finnish front dug to defensive positions, and the front remains stable until the end of the war. 1945 – World War II: Nagasaki is devastated when an atomic bomb, Fat Man, is dropped by the United States B-29 Bockscar. Thirty-five thousand people are killed outright, including 23,200–28,200 Japanese war workers, 2,000 Korean forced workers, and 150 Japanese soldiers. 1945 – The Red Army invades Japanese-occupied Manchuria. 1960 – South Kasai secedes from the Congo. 1965 – Singapore is expelled from Malaysia and becomes the only country to date to gain independence unwillingly. 1969 – Tate–LaBianca murders: Followers of Charles Manson murder pregnant actress Sharon Tate (wife of Roman Polanski), coffee heiress Abigail Folger, Polish actor Wojciech Frykowski, men's hairstylist Jay Sebring and recent high-school graduate Steven Parent. 1970 – LANSA Flight 502 crashes after takeoff from Alejandro Velasco Astete International Airport in Cusco, Peru, killing 99 of the 100 people on board, as well as two people on the ground. 1971 – The Troubles: In Northern Ireland, the British authorities launch Operation Demetrius. The operation involves the mass arrest and internment without trial of individuals suspected of being affiliated with the Irish Republican Army (PIRA). Mass riots follow, and thousands of people flee or are forced out of their homes. 1973 – Mars 7 is launched from the USSR. 1974 – As a direct result of the Watergate scandal, Richard Nixon becomes the first President of the United States to resign from office. Vice President Gerald Ford becomes president. 1991 – The Italian prosecuting magistrate Antonino Scopelliti is murdered by the 'Ndrangheta on behalf of the Sicilian Mafia while preparing the government's case in the final appeal of the Maxi Trial. 1993 – The Liberal Democratic Party of Japan loses a 38-year hold on national leadership. 1999 – Russian President Boris Yeltsin fires his Prime Minister, Sergei Stepashin, and for the fourth time