266 A HISTORY OF PERSIA. Vizeer of Prince Kamran of Herat, was then in the Persian camp, and Abbass Meerza desired him to inform his master that the Shah, being now not engaged in Russian wars, was at leisure to assert by force of arms the claims of the Kings of Persia to dominion over Affghanistan. This declaration on the part of the Persian crown-prince was the beginning of a series of events which greatly contributed to bring about the subsequent Affghan war. Prince Kamran was required to acknowledge the authority of the Shah, and to pay tribute to him as a vassal, or else to be prepared to feel the effects of his power. The ruler of Herat endeavoured by means of a soft answer to turn away the prince's wrath, but this did not have the effect of inducing his Highness to forego the resolution he had taken of marching upon Herat. His son, Mahomed Meerza, was at his request appointed Vali of Khorassan, so that the crown-prince might be at liberty to devote his exclusive attention to the great scheme of conquering Affghanistan. He wrote to the Shah, requesting large reinforcements for the realization of his brilliant plans; but the king, while approving of the resolution to add Herat to his dominions, and while sending the required forces to Khorassan, directed that they should be led by Mahomed Meerza, and that the crown-prince should return to Tehran. He doubtless felt that his own days were numbered, and was therefore unwilling to risk the occurrence of the confusion which he knew would ensue in Persia in the event of his dying while the heirapparent should be far away in Affghanistan.
The crown-prince returned to Tehran, bringing with him the fallen chiefs of Khorassan. He also brought
