A battle for Taipei could hinge on defending this river. Here's how Taiwan's forces are readying for that fight.

The Tamsui River is highlighted as a significant geographic vulnerability in Taiwan, cutting through Taipei where government and military headquarters are located. During recent Han Kuang drills, Taiwanese forces practiced defending the river corridor, which provides potential direct access into central Taipei. This waterway forms part of an "iron triangle" with Bali Beach and Taipei Port, making it crucial to the capital's defense.