Probably both. Can't have one without the other.

From 2008:

Ambassador Perez says that it is NOT Venezuelan government policy to renege on contracts and that all will be clarified in due course. He adds that there are "dark forces" at work to negatively influence Venezuela's political and economic progress but that the Venezuelan government will continue to act in all seriousness, of course, with the best interests of the Venezuelan people uppermost in mind. In conclusion he assures that it is "inconceivable" that Venezuela will simply renege on a properly signed contract (specifically Crystallex/Las Cristinas) and says that there has been a lot of "disturbance" (probably corrupt influences inside and outside of the government) that have affected an early outcome[sic].