Comprehensive risk management involves bringing together strategies and measures to reduce disaster and climate risks. Rather than a series of individual measures, it combines both tried-and-tested and innovative instruments from the fields of climate change mitigation, climate change adaptation, disaster risk management and social protection into a single holistic approach. Transitional development assistance acts as a bridge to humanitarian aid, where the overriding objective is to save lives. Comprehensive risk management also takes account of industrial hazards and biological threats where there is a potential link to extreme events (e. g. a nuclear core meltdown following a tsunami or epidemic outbreaks after severe flooding).