By now we have hard data proving that there is a clear economic impact on Russia associated with the sanctions.
Yes, it's true that sanctions themselves are a limited tool, but I think they are extremely effective when they're combined with other forms of diplomatic pressure, and when they're combined with more military presence in the region.
As has been discussed today, I think we need to explore very specific sectors through which we can punish specific Russian individuals and also some specific sectors of the economy. I think the time has come to upgrade our sanctions, and I strongly believe they do work.