Manning and WikiLeaks may have been credited by some as catalysts for the Arab Spring, but they were not.
Mohamed Bouazizi's self-immolation was the catalyst for the Arab Spring. It's not as if Tunisians needed anyone to tell them how corrupt their government was. Once Tunisia looked like it might fall, revolutionaries in other countries started planning their own protests.
Amnesty International are one of the organisations that credit Wikileaks as being a catalyst for the Arab Spring.
"One example highlighted by Shetty was Tunisia, where WikiLeaks revelations about Ben Ali's corrupt regime combined with rapidly-spreading news of the self-immolation of a disillusioned young man, Mohamed Bouazizi, to spark major protests." [1]
Mohamed Bouazizi's self-immolation was the catalyst for the Arab Spring. It's not as if Tunisians needed anyone to tell them how corrupt their government was. Once Tunisia looked like it might fall, revolutionaries in other countries started planning their own protests.