Why Itachi didn't killed the members of Akatsuki..

[ᖇ α z m α η]

Itachi has probably more IQ than Shikamaru which is above 200.. Itachi can probably assasinate all the members of akatsuki specially Orochimaru when he tried to take his body.. The zetsu which was keeping an eye on Itachi can be assasinated too by capturing him in genjutsu or the sword of his Susanoo but why Itachi didn't killed them all? Why he left Orochimaru even??

Itachi wanted everyone to believe he's a criminal but deep inside he yearned for peace & he let go of Orochimaru as he was not much of a threat to Itachi at that time. Killing zetsu would only attract unwanted attention towards Itachi from the Akatsuki.

 

[Itachi75]

itachi fighting both obtio and pain would've been killed X_X
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Zetsu monitored all of his actions, Zetsu are like big brother, they are everywhere. heck there is no telling if a zetsu spore could've been on every akatsuki member at al times. Zetsu is to crazy.
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The moment itachi merked an akatsuki member, zetsu woudl've known and would've informed obito, and obito would've gathered pain, and together they would've killed Itachi.....
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Itachi would've put up a fight and I'm pretty sure Pain and obito wouldn't have gotten out of it scotch free, but in the end Itachi would've been killed.
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Also killing or stopping them went against his mission. His commission was to spy on them not take them out.
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Itachi was loyal to konoha, and he wouldn't have ever went against it(unless Danzo came to power, then Itachi would've merked Danzo)

 

[USSJ Future Trunks]

The moment itachi merked an akatsuki member, zetsu woudl've known and would've informed obito, and obito would've gathered pain, and together they would've killed Itachi.....

1. they dont care enough to do that
2. how will they divert resources to that when jins are more important

Itachi was loyal to konoha, and he wouldn't have ever went against it(

yet did so when he threateneed the elders and tried to kill kakashi in cold blood

Itachi wanted everyone to believe he's a criminal but deep inside he yearned for peace

yet helped start the worst war in history