How exactly is Pakistan getting played, they only have an active role in facilitation, not enforcement.
Look where things were one week ago, it was an apocalyptic spiral and now the same people are talking face to face
In the real world, you may or may not be aware, but face to face meetings in the context of disagreement demonstrate at least the ability to open a theoretical channel for resolution.
Yes that talks may not result in anything and there are plenty of spoilers around in the world.
If let's say in 3 months time you need other facilitators, wonder who else Iran would trust.