Whether when invasion is imminent it is better to anticipate or to await it.
I have often heard it disputed by men well versed in military affairs, whether, when there are two princes of nearly equal strength, and the bolder of the two proclaims war upon the other, it is better for that other to await attack within his own frontier, or to march into the enemy’s country and fight him there; and I have heard reasons given in favour of each of these courses.
They who maintain that an enemy should be attacked in his own country, cite the advice given by Croesus to Cyrus, when the latter had come to the frontiers of the Massagetae to make war on that people. For word being sent by Tomyris their queen that Cyrus might, at his pleasure, either enter her dominions, where she would await him, or else allow her to come and meet him; and the matter being debated, Croesus, contrary to the opinion of other advisers, counselled Cyrus to go forward and meet the queen, urging that were he to defeat her at a distance from her kingdom, he might not be able to take it from her, since she would have time to repair her strength; whereas, were he to defeat her within her own dominions, he could follow her up on her flight, and, without giving her time to recover herself, deprive her of her state. They cite also the advice given by Hannibal to Antiochus, when the latter was meditating a war on the Romans. For Hannibal told him that the Romans could not be vanquished except in Italy, where an invader might turn to account the arms and resources of their friends, whereas anyone making war upon them out of Italy, and