Hmmm, we know under UBL, that Al-Qaeda and Iran were not friends....now with him out of the way, could the two join forces?
They were not necessarily friends and they were not necessarily enemies. But they were/are Muslims, and Iran has been harboring a number of Bin Laden's operatives for years now.
Back in November 2008 a letter to Iran’s leaders from AQ’s
Zawahiri was intercepted thanking Iran for helping AQ get a foothold in Yemen after they had been forced out of Iraq, and thanking Iran for financial assistance in an attack on the US embassy there in 2008.