ECO, ASEAN, OIC are major alliances and corporation movements but it depends on a country to make the alliance effective. Pakistan, Turkey, Iran can make ECO as a game changer but will power is needed. No government in Pakistan was enough sincere to industrialize Pakistan inorder to reduce its imports and increase exports. Agriculture is also at brink of collapse.
CPEC is a un announced military alliance between Pakistan and China. You will see it in near future. An attack on Pakistan will be considered as an attack on China. CPEC is a strongest bond.