No!
Sasuke only have (well... he HAD, now that he killed him) one brother, Itachi.
Naruto does not even have a brother.
Naruto and Pain are not brothers, they are however brother disciples because Pervy Sage taught them both.
No
Yes.
do the mission MIST ASCENDANT
as of the most recent naruto chapter the only relative of naruto that they have introduced is his father no mention of a brother
No. They arent related whatsoever. ^ this person needs to do some studying It is highly possible for one they look alike but that could mean nothing, for two Naruto's mother Kushina Uzamaki was not from Konoha. However they would not be brothers, cousins maybe. Because we see the death of Pein's parents. and if they were brothers, naruto would have never been born as pein is years o;der then naruto, also we know how naruto's father died, being the 4th Hokage.
Yes, they are. Both of their fathers are brothers so apparently, they are cousins.
neither, naruto starts fighting pain. pain is also jiraiyas student.
No. Naruto and Pain were not closely related. They were drawn similarly, and that is because they are both from the Uzumaki clan. They had the same sensei (Jiraiya).
yes, sasuke kills Itachi but itachi was already weak with an illness that is still unknown
Well Jiriya-sama was killed by Pein. So far Naruto is training to get revenge on Pein for killing Jiriya-sama. So we have to wait to see. naruto is cause it turns out that pein and naruto are brothers and naruto kills him!!!!!!!!!!!!
No they are not. Gaara is from Suna Gakure (Village Hidden in the Sand) and Naruto is obviously from Konoha Gakure (Village Hidden in the Leaves), therefore, they cannot be brothers. Also more proof is that Naruto shows no relation to Temari and Kankurou whatsoever and that Naruto's father is the forth Hokage and Gaara's father was the Third Kazekage.