After signing it?
This is a relation between weak/oppressed and bully/oppressor.
The weak and oppressed one should never offer the bully with any kind of obligations. The relation between Tom and Jerry will surely end with destruction for Jerry.
Pakistan signed it and they can't leave it without tolerating severe consequences. It can help USA to gather others to put pressure on Pakistanis. Hey they signed it and they don't honor it, so the weak has to follow own words or else will be severly punished by others.
Pakistan should have never signed that shit and you know it well but trying to play the smartass