PHNOM PENH: Southeast Asian foreign ministers urged restraint Thursday as China launched massive military drills off Taiwan, warning the situation risked spiraling into "open conflicts." A furious Beijing kicked off its biggest-ever exercises around Taiwan in response to US House Speaker Nancy Pelosi's visit this week to the self-ruled island.

Ministers from the 10-member Association of Southeast Asian Nations (Asean) meeting in Phnom Penh warned against "provocative action." The situation "could lead to miscalculation, serious confrontation, open conflicts and unpredictable consequences among major powers," the ministers said in a joint statement published Thursday.

Chinese Foreign Minister Wang Yi is attending the summit along with his US counterpart Anthony Blinken, though they are not expected to hold a one-on-one meeting.

Beijing, which considers Taiwan a part of its territory to one day be reclaimed, by force if necessary, was enraged by the trip by Pelosi — the highest-profile elected US official to visit the island in 25 years.

It vowed "punishment" and state TV said it began military drills, including live-fire exercises, in several areas encircling Taiwan.

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EU foreign policy chief Josep Borrell, in Phnom Penh for talks with Asean, condemned the Chinese response.

"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," he tweeted.

Kung Phoak, Cambodia's deputy foreign minister and Asean spokesman, urged both sides to stabilize the situation.

"We hope de-escalation happens... and normalcy returns to the Taiwan Strait," he told reporters.

Miscalculation fears Asean is split between countries with close ties to China, such as Myanmar, Cambodia and Laos, and others that are wary of Beijing and its growing international assertiveness.

But no Asean country formally recognizes Taiwan and none have shown an appetite for backing Taipei against the communist giant.

The ministers' statement — which avoided referring to Taiwan by name — said Asean "stands ready to play a constructive role in facilitating peaceful dialogue," though it is not clear either side is interested in outside mediation.

While Wang and Blinken are not scheduled to meet bilaterally, they will both attend a meeting Friday of the Asean Regional Forum (ARF), a 27-member body set up to discuss security issues that also includes Russia and the EU.

Australian Foreign Minister Penny Wong, who will also join the ARF gathering, said the fragile status quo in the Taiwan Strait must be maintained.

"All parties should consider how they can contribute to de-escalating current tensions," Wong said.

"One of the risks the region is concerned about is the risk of miscalculation." Pelosi's visit and the flare-up over Taiwan have overshadowed the Asean meeting, which had been due to focus on the bloody crisis in Myanmar.

Asean has spearheaded so far fruitless diplomatic efforts to ease the turmoil that has flowed from last year's military coup.

Several members are growing increasingly angry at the junta's stonewalling tactics.