Unless you are saying that nobody can purchase it, it is purchasable. If it purchasable, there is no reason that a scientist from Russia cannot go buy it somewhere.
—” there is no reason that a scientist from Russia cannot go buy it somewhere.”
Very complex and location-specific.
That said, yes you can probably find a vendor that will promise you anything, he will attempt to send a team of consultants for USD upfront and in a year or two...