It would be a further means of isolating the regime. But what I believe would be even more effective are targeted sanctions. The European Union and the United States have, since 2009, prepared lists of specific officials who are not allowed to enter the European Union or the United States, and whose assets would be frozen. That is an even more powerful message that individuals will have to pay the price, that even if they're in power today, there is a blacklist out there that identifies them and one day they may face justice.
On April 24th, 2012. See this statement in context.