As God said would happen, all people and all nations are turning against Israel.
So yes, the beginning of the Zechariah prophecy is in the process of being fulfilled.
But a prophecy is not considered to have been fulfilled, biblically, until all components of a prophecy have been fulfilled.
Until that happens, we cannot say, biblically, that a prophecy is in the process of being fulfilled. Fulfillment can only be claimed after the fact.