And when the historic enemies meet, it is also a catalyst for unusually high television ratings.
They have been ordered to secure the streets for their historic enemies, the Arabs.
Significantly, nations have pursued nuclear deterrence in defense against historic enemies.
Pakistan's government reacted quickly as well, and is working in cooperation with its historic enemy, India, on relief efforts.
If you want to stay here and have a face-to-face with your historic enemy, then you have to do it on my terms.
But Chile says it needs the F-16's to maintain a level of competence and to defend itself against historic enemies.
In the early 18th century, the Jumano tried to create an alliance with their historic enemies the Apache.
The European project, begun as a means to ensure peace among historic enemies, has faltered since the end of the cold war, which helped define it.
But the immediate spark for the protest was a deal to export natural gas through Chile, a historic enemy.
And it has overshadowed instances in which historic political enemies seem to be finding common ground on policy.