The clash between Tsunade and the Fourth Raikage ultimately never came to blows.
With the host, Mifune, the general of the Land of Iron, urging them to make peace, and their respective guards pulling them apart, the Hokage and the Raikage eventually sat down.
The Five Kage Summit was able to continue.
At the start of the meeting, the Fifth Kazekage, Gaara, recounted what had happened to him, including how the Akatsuki Organization had extracted One-Tails Shukaku from his body.
As the meeting progressed, the Five Great Villages came to a common understanding that they needed to work together against the Akatsuki Organization.
Just as the summit was about to adjourn, the masked Tobi—that is, Obito Uchiha—appeared.
With Sasuke no longer there to disrupt the meeting, Obito had shown up in person.
In front of the Five Kage, he officially issued an ultimatum: the Fourth Shinobi World War had begun.
Faced with the masked Tobi, who could come and go as he pleased, and knowing that he commanded a hundred thousand White Zetsu, the Five Kage realized that war was upon them. They accordingly formed the Allied Shinobi Forces.
As soon as the summit ended, the Five Kage rushed back to their respective villages to begin mobilizing for war.
Tsunade also returned from the Land of Iron. She assigned mobilization duties to the various departments and ordered Kakashi and Yamato to take Naruto to Turtle Island in the Land of Lightning. There, he would train under Killer B to learn how to control the Nine-Tails and avoid being captured by the masked man, Tobi.
Naruto, confident in his own strength and his control over the Nine-Tails, flatly refused Tsunade's arrangement.
No matter how much Tsunade and Jiraiya tried to persuade him, nothing worked.
With no other choice, Tsunade called Hao