To muddy the waters further, I don't think Hergé ever explicitly defines Borduria as a Soviet/Eastern bloc country. Certainly the country's portrayal in The Calculus Affair parodies many aspects of a Stalinist state, but Hergé seems to deliberately also include details moere reminiscent of a Fascist or Nazi state - notably the red armbands with a white circle containing a black motif. I think Hergé, who publicly declared himself fed up with being accused of being both right wing and left wing from critics on each side was intentionally inventing a totalitarian state that showed how similar Fascist and Communist societies are.
In Picaros, Borduria's Fascist side seem even more overtly stressed, since the Tapioca regime they're supporting is clearly a parody of a South American right-wing dictatorship - just look at the Nazi-style helmets of the soldiers, and other uniform details. However, now that I look properly, your question did say "apart from the obvious Bordurian backing", so maybe the question of whether or not Borduria is a Soviet bloc country isn't strictly relvevant to our search for the right answers.
Maybe more relevant is the fact that I don't think your original question does actually state that you're only looking for evidence of Soviet/Eastern bloc backing of Tapioca's side only (rather than in San Theodoro's political background generally). So tuhatkauno's Kalashnikov may count as a valid part-answer to your question. From the evidence of this weaponary and from their Ché/Castro-inspired appearance, the Picaros seem quite likely to be Soviet-backed.
That said, the Picaro's stated backers, the International Banana Company, somehow sounds more like a US-owned corporation than a Soviet-owned one - again, Hergé seems to be deliberately muddling up traditional left-right boundaries to make his book small-p political, rather than politically partisan.
Anyway, I don't know anything about the Maxim Solokov part of tuhatkauno's answer, so I'm not saying you weren't right to reject his answer as a whole.
Sorry for butting in with such rambling, unstructured thoughts. I'll go and get some sleep! |