Ivan knew all this, because sometimes a chief would come to Moscow for an asylum, and others took service in his army. He no longer sent tribute, although occasionally, when he was occupied elsewhere, he did send a small present. In 1478 Khan Akhmet sent ambassadors to Moscow to remind him that the tribute was in arrears. Ivan, who had apparently a wonderful command over his features, pretended to lose his temper, jumped on the picture of the khan, and ordered all the envoys except one to be put to death. The survivor was told to go home, and tell his master of his reception. Ivan had reasonable cause for thinking that Akhmet would be displeased, and collected an army of 150,000 men on the Oka, where he took up a strong position. He had been right in his conjecture, for Akhmet gathered an army and in due time arrived on the opposite bank of the river. Ivan had time to reflect. He did not much fancy risking a decisive battle, and returned to Moscow to consult his mother, the boyards, and the priests. All urged him to fight, and finally he came back to the camp, convinced that scheming and plotting were more in his line. All this time the two armies lay within earshot, exchanging complimentary remarks, with no casualties. The khan offered to (p. 102) pardon Ivan on condition that he should come and hold his stirrup; or, if he were too tired, if he should send some high officer to do it in his name. Ivan shook his head. Meanwhile the priests at Moscow were growing impatient, and the Archbishop Vassian sent him a warm letter. It happened that Akhmet was quite as prudent as Ivan; but when the winter came and the Oka, instead of a barrier, became an easy crossing, Ivan ordered the retreat. Just then the two armies, led by such brave commanders, were seized with a panic, and away they fled in opposite directions. (1480.) The honors were with Ivan, because he did not have so far to run as Akhmet, who did not stop until he reached Sarai. It is not stated why Ivan received no surname from this great battle. The following year, 1481, Ivan had sufficiently recovered to show the courage he possessed. There was a disturbance in Novgorod, where the people did not appreciate the nobility of his character. He ordered some of the boyards to be tortured and put to death, and _eight thousand_ citizens were forcibly packed off to Souzdal.