bring something to a head
US /brɪŋ ˈsʌm.θɪŋ tuː ə hɛd/
UK /brɪŋ ˈsʌm.θɪŋ tuː ə hɛd/

1.
to cause a situation to reach a point where a decision has to be made or action has to be taken
:
•
The ongoing dispute was finally brought to a head by the manager's intervention.
•
We need to bring this issue to a head soon, or it will just drag on.