We were in agreement -- he's gonna kill Pop, that's it. Gotta get Sollozzo

we'd discussed in various including Business or personal? thread that They did need to kill the Turk and there seemed to be no other way than for Michael to do it himself.

However now with this new theory There was no need Gotta get Sollozzo by Michael or anyone
They could have let them think there is a truce, lulling them into false security until Vito was back