Trans-border emergency management. What can be improved?

As a consequence of the severe accident in Fukushima Daiichi many working groups were installed in local, regional, national and also international levels, most under the motto ''think the unthinkable''. The resulting hundreds of reports are used by different actors for their interests. Certainly this has triggered further improvements of emergency preparedness. But the question raises whether these activities were agreed with the relevant partners of the emergency management and the neighboring countries. In practice this would be of essential importance and is therefore in the focus of HERCA (head s of the radiological protection competent authorities) and WENRA (Western European nuclear regulators association).