Geography provides an exacerbatingfactor: where the North Sea narrows into the English Channel, the waters are funnelled towards the English and Dutch coasts.
However water has, so far, rarely been at the roots of the tensions, but can indeed be an exacerbatingfactor where social and political tensions already exist.
Even if other natural factors are happening at the same time -that means that digging coal and oil up from underground and burning them releasing even more CO2 into the atmosphere is a certain exacerbatingfactor.