Cyrus then approached Clearchus, the leader of the Greeks, who was commanding the phalanx stationed on the right, and ordered him to move into the center so as to go after Artaxerxes. However, Clearchus, not desiring to do this—for fear of his right flank—refused, and promised Cyrus, according to Xenophon, that he would "take care that all would be well". Cyrus wanted to place him in the center as the Greeks were his most capable unit, and were thereby most able to defeat the elite Persian cavalry and in the process kill the Great King, thereby gaining the Persian throne for Cyrus. Clearchus refused this owing to the insecurity that the Greeks had for their right flank, which tended to drift and was undefended, as the shields were held in the left hand. That Clearchus did not obey this order is a sign of the lack of control that Cyrus had over his army, as a couple of other occasions throughout this campaign prior to the battle reveal also.