TENS OF THOUSANDS of cheering Algerians greeted independence leader and former president Ahmed Ben Bella Thursday as he returned home by ferry after a decade in exile . . . TWO MEN BROKE into the Brussels, Belgium, home of a U.S. Air Force general assigned to NATO in a possible kidnap attempt, but the general was out of the country, authorities said . . . AN EARTHQUAKE measuring 4.7 on the Richter scale jolted the central South African city of Welkom and its goldfields early Thursday, killing two miners and causing some surface damage.