Sigismund ordered the arrest of the two envoys who were taken to Marienburg in Prussia under escort. Smolensk fell soon after into his hands, and the king returned to Warsaw which he entered in triumph with the last Czar Chouiski a prisoner in his train. By this time the Russians were aroused; 100,000 men-at-arms gathered at Moscow and besieged the Poles in the Kremlin. Meanwhile Sweden had declared war, giving as reason the election of Vladislas, and had captured the ports on the Baltic. The monks of Troitsa, whose heroic defense against the second false Dmitri had made the convent famous, sent letters to all the Russian cities bidding them fight for their country and religion. When this letter was read in public at Nishni Novgorod, a butcher, Kouzma Minine spoke up: "If we wish to save the Muscovite Empire," he said, "we must spare neither our lands nor our goods; let us sell our houses and put our wives and children out to service; let us seek a man who will fight for the national faith, and march under his banner." He set the example by giving one-third of all he possessed, and others followed. Those who refused to contribute were compelled to do so. Minine was elected treasurer; he accepted on condition that his orders should be obeyed without delay. Believing that the leadership should be given to a noble, Minine went to Prince Pojarski who (p. 135) lived in the neighborhood. Pojarski accepted the command, and ordered three days of fasting and prayer. The streltsi were equipped as well as the men-at-arms; but the services of Cossacks and foreign mercenaries were refused. An army was collected and marched toward Moscow, with bishops and monks carrying holy eikons at the head; at Iaroslaf they were reenforced by other troops. They laid siege to the Kremlin; an attempt to relieve the fortress by the Poles was defeated. At last the garrison was forced to surrender. Among the Russian prisoners who regained their liberty was a fifteen-year-old boy, Michael Romanof, the son of Philarete and Marfa. Sigismund was on the way to reenforce the garrison, but hearing of its surrender, he fell back. An assembly was convoked to elect a czar. It was composed of delegates of the clergy, the nobles, the men-at-arms, the merchants, towns, and districts. There was much bickering, but all were agreed that no alien should be presented. When the name of Michael Romanof was called, it was received with enthusiasm, and he was declared elected. (1613.) The delegates remembered the relation between his family and Ivan the Terrible, and the services rendered by his father, the Metropolitan Philarete. There is a story that the King of Poland, when he heard of Michael's election, tried to kidnap him at Kostroma, and that a peasant guide led the party astray on a dark night. When the Poles discovered it, he was struck dead. This is the subject of a famous opera "A Life for the Czar."