Nine foreign military aircrafts entered South Korea’s air defense zone.According to Seoul’s Joint Chiefs of Staff, two Chinese and seven Russian military jets entered the KADIZ, northeast of Dokdo for about ten minutes… before leaving.The military noted none of them violated South Korea’s territorial airspace.Through a communication hotline, China explained their aircrafts were carrying out a routine military exercise.But Russia, which does not have a hotline with South Korea… has not spoken about the matter.Seoul’s defense officials believe it could be a part of combined exercise,… but they will need to carry out further analysis.