"The Five Great Nations Mobilise" (動き出す大国, Ugokidasu Taikoku) is episode 218 of the Naruto: Shippūden anime.
The daimyō of the Five Great Shinobi Countries communicate in a hastily arranged teleconference where they all give their approval to the formation of the Allied Shinobi Forces. As the five Kage then return to their respective villages, Kakashi summons his ninken to relay the news about Danzō's death to their allies.
In Sunagakure, Gaara holds a meeting with the Suna Council and relays to them to events that transpired at the Five Kage Summit. One of the councillors debates the idea of being allied with Konoha, since Danzō is the Hokage and Danzō is known for his duplicitous and shady tactics. However, a fellow shinobi interrupts the meeting to notify them that Team Kakashi had encountered Madara and Sasuke, and that the latter killed Danzō. Kankurō remarks how far Sasuke must have fallen in order to kill a Hokage and wonders whether Naruto would truly be able to save him from the darkness. Temari reminds him that it was Naruto who saved Gaara and when they could not and Gaara tells them that such is Naruto's power and what he does about concerning Sasuke is up to him.
Back in the village, Shikamaru is notified by his father regarding the recent events. He heads to the front gates with Chōji and Ino to meet the incoming squad. Naruto tells them that he fought Sasuke but that he would share the details later, and asks Shikamaru if he would gather the other members of the Konoha 11 as he has news to share. Konohamaru, Udon and Moegi also come running up to Naruto, wanting to interview him for their newspaper, but Naruto tells them that he is busy and would do it some other time. As he walks through the village gates, he notices the restoration process and smiles.