Taipei's mayor and Taiwan's defense minister are now openly discussing moving Songshan Airport out of the city, a shift that could free up prime land but raises questions about the island's air defenses.

• Taipei Mayor Chiang Wan-an says the timing and conditions are ripe to relocate the downtown airport, and the city wants to talk it through with the central government.
• Defense Minister Wellington Koo backs a careful review, insisting any move must not weaken Taiwan's military capability, since Songshan doubles as an air force base.
• Koo had earlier suggested the airport's future could be reconsidered once the Taoyuan Airport rail link opened — a condition Chiang now says has been met.
• Lawmakers took up the plan alongside a proposed expansion of Taichung airport, part of a wider rethink of how Taiwan splits civilian and military air traffic.
• New thinking about how a war with China would actually be fought is driving the push to redistribute military aviation away from the capital.

Outlook: Expect a formal central-government feasibility study, with the defense ministry's conditions shaping whether the relocation advances.