Are you retarded to call others retarded? As I said in my first post, Itachi MS can
control Kurama so what problem is a control Kurama? Itachi already know about the MS being able to control Kurama because he told Sasuke to go read the tablet to know the purpose of the MS
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and
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Sasuke further going into detail in Shippuden
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So the MS power, which Itachi had full knowledge of, can control Kurama. It's also pretty widely known that the Uchihas can control Kurama because of Madara taming it like a pet. Even the Kages from other nations knew of this and is why they mentioned Madara as being one of the people who truly controlled Bijuus
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and Kisame also knows the power of the Sharingan long before he met Itachi
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and
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.
Do you really think they were talking about Kurama when they both have info about the Sharingan having the power to control? They even separated Naruto from Jiraiya for a reason; Naruto was nothing for either of them and Naruto didn't even know how to access Kurama's power for the chakra cloak so Kurama pose no threat at all since Naruto would have been knocked out with his legs cut off. At that time, Naruto would have to get angry or about to die.