China staged another large air and naval push around Taiwan, a warning sign for the region and a fresh test of Taiwan's defenses.

• Twenty Chinese military aircraft flew out to sea starting Saturday morning, and 12 of them crossed the unofficial line dividing the Taiwan Strait.
• The planes entered airspace to Taiwan's north, center, and southeast, paired with Chinese warships in what Beijing called a joint combat patrol and sea-air drill.
• Taiwan's defense ministry called it harassment and sent up its own planes and ships, plus shore-based missile units on alert.
• The mix included fighters, bombers, electronic warfare planes, an early-warning aircraft, and drones — a full strike package, not a token flyby.

Outlook: These pressure drills have become routine and are likely to keep escalating in size and frequency.