Pakistan will start a war, may be on "X".And india had made it clear it no longer intends to abide by it. No one including the world Bank can enforce it if india decides to junk it.
Pakistan has the right to go to war. You can chose to exercise that right. But regardless of that, this treaty is no longer acceptable and will be abrogated or renegotiated.
Either way the good luck this unequal treaty will not live much longer.
By the way, which countries will support pakistan in this. I am curoius to see.