Why was the Uchiha clan planning to attack konoha?

Answer 1

itachi was a spy from d village hidden in d leaves and was ordered 2 because saskes dad was going to start a war.....

WRONG, it was a conspiracy. they were afraid it would happend, so Danzo, and the three elders ordered itachi to do it.

Answer 2

The Uchiha Clan was weakening ever since they failed to take the seat of First Hokage.

It weakened even further with the departure of their leader, Madara Uchiha. The Uchiha Clan planned a coup d'état to try and regain power, with Sasuke's father, Fugaku Uchiha, as leader. The Hidden Leaf Village caught onto this plot and placed a spy in the Uchiha Clan. That spy was Sasuke's older brother, Itachi. He acted as a double agent, passing information onto the Uchiha to the Hidden Leaf Village. The Hokage's advisors ordered Itachi to kill the entire Uchiha clan to prevent the Uchiha coup d'état to become the cause of The Fourth Great Ninja War. What Itachi saw in the last Great Ninja War turned him into a pacifist, wanting to keep peace at all cost. Itachi had to decide between his own clan, or the Hidden Leaf Village? And so, Itachi made his decision. He ultimately chose the Hidden Leaf Village to keep peace. On the night Itachi was to annihilate the Uchiha clan, he encountered Madara Uchiha and made a deal with him if Itachi helped him wipe out the Uchiha clan, Madara would have to promise not to attack Konoha, which he accepted. Itachi carried out his mission. In one night, Itachi and Madara wiped out the Uchiha Clan, except for one person Itachi could not kill, his precious little brother. Itachi's little brother, Sasuke, came home one night to find everyone dead, with Itachi standing over the bodies of dead Uchiha. Itachi told Sasuke, that he was not worth killing, to set Sasuke on the path of revenge.

To become a criminal, to be known as the traitor who murdered his own clan, that was all part of Itachi's mission from the Hidden Leaf Village. To trade his brother's love for hate, and honor for disgrace. After his mission was completed, Itachi appealed to the Third Hokage, asking him to protect his precious little brother Sasuke. He then became an Akatsuki, to "spy on the organization from the inside", and prevent Akatsuki from attacking the Hidden Leaf Village.

Itachi was ravaged by disease and illness, prolonging his life with medication. He had to battle and die in front of his little brother Sasuke, so that Sasuke would be known as the "hero" who avenged the Uchiha Clan.

Sasuke set down the path of revenge turning to Orochimaru for more power, and eventually absorbing Orochimaru. When he killed Itachi, as Itachi was nearly blind and suffering from disease, he was told the truth of the Uchiha Clan Massacre and Itachi's life by Madara. Realizing that his brother always loved him, and that he himself had killed his loving older brother, Sasuke awakened his Mangekyo Sharingan and vowed to destroy the Hidden Leaf Village taking advantage of his brother Itachi.

Answer 3

Because he found that Itachi was forced to kill all of his clan because of Konoha.

Answer 4

They felt that they were underestimated like the dogs of Senju. They wanted to take over Konoha

Answer 5

Because he is madara uchiha(use wilkipedia) and madara wants to destroy it