CNNNorth and South Korean top diplomats speak in Manila, South Korean media reportsCNNManila, Philippines (CNN) The foreign ministers of North Korea and South Korea spoke face-to-face at a gala in Manila Sunday night, according to South Korean media reports, at a time of heightened tensions over Pyongyang's missile program.North Korea calls offer of talks from the South 'insincere'BBC NewsBalloons and leaflets are the next potential flashpoint between the KoreasQuartzNorth Korea Foreign Minister Says South Korea Approach Lacks Sincerity: YonhapU.S.