Sasuke spends the next few weeks mostly focusing on diplomacy and shoring up his own defenses (the fake Madara had infiltrated at least some of his base, and what he told Sasuke - about Konoha's crimes, about the truth behind his family's death - well, Itachi's confirmed some of it, and the handful of spies Sasuke inherited from Orochimaru have confirmed Tsunade's still out, and that bastard Danzo has been maneuvering to be named Sixth Hokage - )
If it was just Sasuke, he would've already left to confront and maybe kill Danzo. But he has an entire village to look after, and a significant amount of responsibility for the whole nation is on his shoulders, and it's not just his own life or even Itachi's he'd be setting on fire -
He does trade eyes with Itachi, restoring both their lost vision, and sets her free, starts integrating her into his guards on her request.
He tightens his alliance with Amegakure, makes inroads on his more immediate neighbors, does what he can to help the daimyo improve trade...
And then the Akatsuki apparently have recovered enough to move against Kumo, stealing the last of that village's jinchuuriki, and a Five Kage Summit is called.
Sasuke spends maybe ten minutes hesitating over whether to (diplomatically) crash the summit, before deciding his coalition is strong enough and, anyways, he's allied with one of the two bijuu no longer under Akatsuki control.
The actual Kage can each bring two guards into the summit itself. It'll be polite to keep to that. Karin would be invaluable, but he's refined his communication with her enough he doesn't need her hovering over his shoulder, so she can stay with the larger entourage...
He sends a message to Konan, in case she wants to join him, and goes to find Ellisaria. Itachi's the only guard with him, Karin staying behind to manage his tightened defenses.