Anarchists can’t have a successful revolution because they can’t organize installing a light bulb, let alone organizing cross-industry production
What about Anarcho-Syndicalists? That structure is a sort of decentralized command economy, instead of the description given in that link of a "network of free contracts".
Why would leftists support either side in this war? It's essentially a proxy war between Russia and the US, and both countries are ruled by capitalist oligarchs.