The Persian commanders seem not to have suspected the good faith of the communication thus received, and at once set about closing in the Greek ships. The town of Salamis was built in a little bay on the eastern side of the island, the distance across to the mainland of Attica being about two miles. The Greek fleet was drawn up, in what may be described as the shape of a bow loosely strung, in front of the town; the Persian ships were ranged along the opposite, _i.e._, the Attic shore. Both to the north and to the south the channel narrowed, being less than a mile across. The Persians now extended their line northwards till it touched the shore of the island, and southwards till it reached an uninhabited island called Psyttaleia. On this island they landed a body of troops who were to help the crews of any of their own ships that might be damaged, and slaughter any Greek soldiers or sailors who might be in a similar plight. While these preparations were going on--and they lasted nearly through the night--the Greek leaders still hotly debated the question of going or staying. An unexpected end was put to the controversy. The chief opponent of Themistocles in Athenian politics was Aristides. He had been banished, and, at the instance of his successful rival, recalled from banishment when the danger of a Persian invasion became imminent. He now came to join his countrymen, and brought startling tidings with him. He had come from the island of Ægina, which lay some twelve miles to the south of Salamis, and his ship had narrowly escaped capture in making its way into the bay of Salamis; only the darkness had made it possible to do so. Themistocles was fetched out from the council to hear the tidings. "I hope," said Aristides, "that always, and now especially, our strife will be who may do his best service to his country. As for the question of going or staying, it matters nothing whether the Peloponnesians talk much or little. Go they cannot. We are enclosed on every side. This I have seen with my own eyes." "This is good news," replied Themistocles, "for the Persians have done exactly what I wished. Our men, who would not fight of their own free will, will now be made to fight." And he told him of what he had done. "And now go and tell them. If I was to say it, they would not believe me." Aristides accordingly went in to the council and told them his news. Many of them refused to believe it, but when a ship from the island of Tenos that had deserted from the Persians confirmed the report, there was nothing more to say. All that could be done was to make all the preparation possible for a conflict which had become inevitable.