Taipei, Feb. 27 -- China has set up a live-fire training area just 40 nautical miles (75 kilometres) from Taiwan's port city of Kaohsiung without prior notice, raising concerns over regional security and the safety of air and sea traffic, Radio Free Asia (RFA) reported, citing Taiwan's Ministry of Defence.

The ministry stated that Beijing "outrightly breached international standards by unilaterally designating" the training zone. It strongly condemned the action, adding that it had "quickly deployed naval, air, and ground forces to monitor the situation and take necessary actions" after detecting it through "temporary radio communication" with nearby forces, according to RFA.

Usually, coastal nations issue warnings to ships and aircraft...