stand behind
verb1
Idiomatic To support; express one's support for, especially despite opposition; to stick with a decision.
- Mayor Bloomberg and Ms. Wittenberg had repeatedly stood behind the plan, insisting it was best for the city.2012 November 2, Ken Belson, New York Times, retrieved 02 Nov 2012:
2
Used other than figuratively or idiomatically: see stand, behind.