Taiwan Strait crossings have ‘destroyed’ tacit agreement on median line
- Taiwanese defence minister says Taipei would react if Beijing crossed its ‘red line’ but does not specify unofficial air and sea barrier
- PLA forces have since August been routinely crossing the line through the strait, which has never been officially recognised by Beijing

Mainland forces mounted large-scale drills – including firing missiles over Taipei – in August to show Beijing’s anger over US House Speaker Nancy Pelosi’s visit to the island.
PLA military activities near Taiwan have continued since then, though at a much reduced level, and its aircraft are routinely crossing the median line, which for years acted as an unofficial barrier between the mainland and the self-ruled island.
The Taiwan Strait is some 180km (110 miles) wide and at its narrowest, the median line – devised by a US general in 1954 at the height of Cold War hostilities – is about 40km (25 miles) from the island’s coast.
Beijing has never officially recognised the line, although the PLA largely respected it. In 2020, a Chinese foreign ministry spokesman said the median line “did not exist” as mainland forces have a right to operate around the island, which Beijing regards as part of its territory.