We must stop seeing other nations as "good" and "evil". Looking at the history between US and Iran it is hard for me to definitely say that Iran is an evil country hell bent on destroying America. I think the Obama administration realizes the complexity of the relationship between US and Iran and acted accordingly. The timing of the cash payment was unfortunate but it was owed to Iran. It was needed to build trust between US and Iran. Furthermore, what will more sanctions accomplish? The answer is more hostility towards the West as Iran will look to others for support.