Interesting, according to Zhu Li, Kuvira is going to attack Republic City in two weeks. I wonder how the Fire Nation will respond to the looming threat of the super weapon. Moreover, now that Korra can't convince the spirits to help her out, I wonder if President Raiko will force them to build spirit weapons to counter Kuvira's. Is Kuvira's army powerful enough to take on both the army of the United Republic and the Fire Nation military simultaneously with additional backing from the Air Nomads and the Two Water Tribes? Things look stacked but this super weapon is very OP for Avatarverse standards. Kuvira does have supporters in Republic City who may initiate a coup, allowing Kuvira to take control of Republic City in a similar fashion to how Azula took over Ba Sing Se with the Dai Lee. If not, an uprising much like Amon's supporters initiated could wreck havoc inside the city allowing Kuvira to storm the weakened city from the outside.