Perhaps the countries most concerned with the unexpected incident between France and Spain are the United Kingdom and Germany, which have significant conflicts with France.
France has always been the main competitor to the UK's colonial interests in Africa, so the dispute between France and Spain is something the British are happy to see. The main conflict between Germany and France is concentrated on the European Continent, so Germans are also pleased to see the breakdown of relations between France and Spain.
What differs slightly is that Germany hopes for a mutual defeat between France and Spain, or at the very least, to delay France for a period of time.
