They have taken on the entire Arab world many times and proven their capabilities, they've done it in 6 days and that was BEFORE they had nuclear weapons, nowadays would be more like 6 minutes.
Pakistan isn't going to have shit to say about Saudi being attacked. You think Saudi Arabia is relying on Pakistan to come to its defense
You forget about a little country called India sitting right next door and the U.S military on Paki's border in Afghanistan, not to mention Pakistans nuclear arsenal is weak as fuck....