Twitter Met With Sharp Criticism After Suspending Venezuelan Accounts

Twitter suspended over a dozen accounts linked to government institutions without prior announcement. The accounts included journalists, political leaders, and military branches. Users can appeal if they believe the suspension was an error. Some accounts were later restored. Previously, Twitter removed nearly 2000 Venezuelan accounts, initially attributing the campaign to Russia's Internet Research Agency, but later suggesting it originated in Venezuela.

What was the reason given for the removal of nearly 2000 Venezuelan accounts last year?

What did Twitter initially attribute the state-backed propaganda campaign to?