Taiwan's Defence Ministry accuses China of harassment by repeatedly sending Chinese balloons over the self-governing island. The ministry's analysis found that the paths of the balloons pose a serious threat to international passenger flights. The ministry calls for an immediate end to ensure flight safety. The purpose of the balloons is unclear, and a Chinese state media outlet accuses Taiwan's ruling Democratic Progressive Party and media of hyping what it says are harmless weather balloons. China's actions come ahead of Taiwan's January 13 presidential election.