EU foreign policy chief decries China's responses to Nancy Pelosi's Taiwan trip

In his first significant public remarks on the mounting crisis in the Taiwan Strait, the European Union's chief diplomat described China's firing of ballistic missiles over Taiwan and into Japan's exclusive economic zone as "highly worrying developments that lead to destabilisation and risk escalation".

Speaking at the Asean Regional Forum in Cambodia, Josep Borrell, the EU's High Representative for Foreign Affairs and Security Policy, said that "nobody should unilaterally change the status quo by force".

"We need to resolve cross-strait differences by peaceful means," he added.

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Borrell called on "all parties to remain calm, to exercise restraint, to act with transparency and to maintain open lines of communication to prevent any miscalculations that could lead to tragic consequences", reflecting concerns in Europe that the situation could spiral further.

Borrell's address to the Association of Southeast Asian Nations came amid an escalating geopolitical crisis that began when US House Speaker Nancy Pelosi visited Taiwan despite repeated warnings from Beijing.

Beijing regards Taiwan, a self-governing island with 23 million residents, as a rogue province that will eventually be reunited with the mainland, by force if necessary.

EU officials have, until now, pointed to a Group of 7 statement Borrell signed on Wednesday as representative of Brussels' position.

"There is no justification to use a visit as pretext for aggressive military activity in the Taiwan Strait. It is normal and routine for legislators from our countries to travel internationally," read the statement from the foreign ministers of Canada, France, Germany, Italy, Japan, Britain, the US and the EU.

Privately, some EU officials expressed reluctance to get involved in a spat that they see only affecting Europe indirectly.

Borrell's remarks on Friday closely mirrored the G7 statement, but also made clear that the EU "has a clear interest in the preservation of peace and the status quo in the Taiwan Strait".

"That is why I encourage and support active progress in the Asean-led process towards an effective, substantive and legally binding code of conduct for this maritime area, respectful of the interests of third parties," Borrell said.

Pelosi arrived in Taiwan on Tuesday night and met with officials, including Taiwanese President Tsai Ing-wen, before flying out on Wednesday afternoon. The stop was part of an Asian tour, including Malaysia, Japan and South Korea, and immediately drew the ire of Beijing, which had warned Pelosi against making the trip.