This practice of foreign governments working together can BEST be defined as international coordination.
Explanation:
In the global world where the events in one country also affect another country and sometimes have global repercussions it is important for the global governments to work together and form alliances against their shared common enemies in terms of the international coordination between them.
France, US and England have been increasingly active in terms of the war on terror and have been involved in a coordination of alliance to break the barriers.