Is Russian support for Venezuela's Maduro waning?

The symbolism of aid lorries, halted by barricades on the Venezuela-Colombia border, would have been familiar enough for anyone watching from the Kremlin.It told the story of an outmanoeuvred regime, a default defensive response, and terrible PR.Russia, one of Venezuela’s major backers since Hugo Chavez took power in 1998, finds itself holding an increasingly toxic asset.