These models can generate valuable information on the prospective cost-effectiveness of nuclear as well as its contribution to future supply security. The indicator aims at identifying short-term actions that can obtain results within weeks rather than months. The indicator combines an assessment of a member country’s risk to be confronted with sudden supply interruptions and its potential impacts, the risk assessment (RA), and the capability of that country to mitigate these impacts, the mitigation assessment (MA). If the risk is high, more emphasis should be put on effective crisis capabilities than when this risk is low.