SEOUL — South Korea has lodged a complaint with the Chinese and Russian defence attaches based in the country, a day after their warplanes entered its air defence zone.Seoul said it sent up fighter jetsSEOUL — South Korea has lodged a complaint with the Chinese and Russian defence attaches based in the country, a day after their warplanes entered its air defence zone.Seoul said it sent up fighter jets
South Korea protests Chinese and Russian warplanes in its airspace
