'It's hard for parents to achieve that balance without there being perpetual warfare.'

Yet the thickness of the walls was certainly required since the city was originally built at a time of perpetual warfare.

From 70 BC, they waged perpetual warfare with their neighbours, the Aedui, calling upon German mercenaires, led by Ariovistus.

Ashe's was a friendly nature and he could never be long associated with anyone without trying to establish pleasant relations; but he had resigned himself in the present case to perpetual warfare.

"It will make them hate me more than ever, and I say, Barbara, we can't live in an atmosphere of perpetual warfare for the next two years."

For them to bring a truce to this perpetual warfare, to marry their daughters to the arch-enemy, were treason and blasphemy of the highest order.

The mutual desire for an end to the perpetual warfare was the starting point, but there were also pressing political and economic factors.

Fiscal policy had often proved a weakness of Byzantine emperors, and trade was difficult in times of perpetual warfare.

By far the most important was the liberation of the socii from the perpetual inter-tribal warfare of the pre-hegemonic peninsula.

Or think of the perpetual warfare that is the background to everything in "1984," and compare this with our limitless "war of terror."