The owner of the body across from them and his wife, switched. It wasn't impossible, theoretically; the Yamanaka had been displacing consciousnesses for a long time, it was unreasonable to assume nobody else had tried. But to put people into other bodies ... that was a possibility with a great deal of danger attached to it.

Minato's arm stayed exactly where it was, a friendly hold on his wife to any passerby who might come through the area, threatening to the person feeling it.

He could prove his wife's identity, but Konoha had no tested way to prove the person in her body calling himself Sabaku no Gaara was indeed who he said he was. Appealing to Suna could only invite political disaster; this was exactly why Minato had been glad to retire and pass the job on to his student.

"Very well," he said, nodding at Gaara's body. "Then prove yourself, please. How would Kushina show me she was who she said she was?"