Sir John Tusa looks back at the events making the news 20 years ago. Erich Honecker, the East German leader of 18 years and architect of the Berlin Wall, resigns; all Commonwealth countries agree on sanctions against South Africa - except for the UK; the Atlantis Space Shuttle launches successfully from Cape Canaveral, initiating a six-year research mission to Jupiter. A Somethin' Else production for BBC Radio 4.