• US Defense Secretary Pete Hegseth urges Asian allies to increase defense spending.
• China's rapid military buildup sparks 'rightful alarm'.
• US expects allies to spend 3.5% of GDP on defense.
• Pentagon chief stresses need for stronger, more self-reliant network of allies.

The US push for increased defense spending among its Asian allies may indicate a shift in its regional strategy, potentially signaling a more assertive stance against China's growing influence. This move could strengthen the US position in the region, but may also risk escalating tensions with China, which could have significant implications for global security and trade.