"Your jutsu will dissolve as soon as this war is over and then someone will try to do what we're doing now again." A statement made by Obito himself. In another translation it goes, "After this war that jutsu will crumble and fall apart and someone from your end will once again attempt what we are doing now."
It's a hypothetical statement, that, if in case they would win that's what will happen. Which, I think, will happen in the episodes to follow. Obito and Madara will lose, and the Ninja Alliance will win. But the alliance won't last, and someone, I think Sasuke and Orochimaru, will try, with better results, to revive the Juubi once again.
How will Obito and Madara get defeated? Well that is something to watch out for, which of course something that Naruto will pull off and that something would make him to be recognized as the "Child of Prophecy."
How will the Ninja Alliance fall apart? It's anybody's guest. And it's worth the wait.
i feel like it would fall apart if not for naruto,
he's really the the glue that holds all of
the ninja villages together, and he's the one
person that they all trust and believe in...wow
that sounds really corny
I think that the statement by Obito was based on
the premise of hate repeating its cycle. So he was
implying that the hate that produced him will
produce another like him with the same goals. Its
wat jiraiya was talking to naruto about, the cycle
of hatred producing people like nagato, sasuke,
and obito. The next one in line is obviously
sasuke. So i remember naruto saying something like
he will take the hatred from sasuke and they will
both die or some shit like that. With the villages
i think after this shinobi alliance it will last
for a looooong time. Only because their 5 kages
died together, which symbolizes unification of the
nations. I really dont think that someone from
there will repeat the hatred cycle again because
gaara dispelled that already. I think Obito was
referring to sasuke. Even tho he isnt literally a
part of their ranks he still comes from them.