SOUTH KOREA will procure 120 F-16 Falcon fighters from the United States, dropping a tentative previous plan to introduce F-A-18 Hornets as its next-generation aircraft, Defense Minister Lee Jong-koo said Thursday . . . JAPANESE Prime Minister Toshiki Kaifu will meet with President Bush on April 4 in Newport Beach, Calif., for a "free and wide-ranging exchange of views," the Foreign Ministry announced Thursday.