Why the Dutch accepted the Anglo-Japanese alliance

How did the Dutch view the Anglo-Japanese alliance?

They regarded it as a sensible defensive arrangement that could make Japan more secure and less aggressive.

The Dutch interpretation distinguished Japanese aggression from a defensive war. Britain was not automatically obliged to support a war Japan started. Access to British support nevertheless gave Japan greater confidence in its own security. That reassurance could weaken demands for greater Japanese defense spending, since advocates of a larger fleet would have to explain why Royal Navy backing was insufficient.