Like many other tech companies, Facebook holds the right of first refusal over any potential transaction on the secondary market.

WSJ: Hot Trade in Private Shares of Facebook

Unfortunately the Americans are persistent in their refusal, citing concerns about the potential political nature of such trials.

BBC: You are in: Talking Point

On Wednesday, America, China, Russia, France, Britain and Germany announced that they would no longer tolerate Iran's refusal to give a yes or a no to a package of incentives and potential punishments they hoped would stop Iran's enrichment of uranium.

ECONOMIST: The axis powers | The