One such way he (Dhu’l-Qarnayn) followed. (Al-Kahf 18:85)
Dhu’l-Qarnayn was granted both the power and ability of accomplish-ment and the power and ability to surmount hardships with consummate ease. He was favored with all the means and possibilities to overcome easily the hardships and obstacles invented and caused by his opponents.
As it is understood from the Qur’anic verses about Dhu’l-Qarnayn, he was one who represented Islam in the world power-balance, interfered with any disorder and confusion to arise in any part of the world he could march to with his armies, reinstated peace and order, and built barriers before anarchy and dissension to ensure or preserve safety and security. In order that he could fulfill his duties or mission perfectly, God Almighty equipped him with whatever was necessary. The verse, “We surely estab-lished him with power in the land, and for everything (that he rightly pur-posed), We granted him a way (the just means appropriate to just ends)” (Al-Kahf 18:84), confirms this.
In short, Dhu’l-Qarnayn was a hero who committed himself to a lofty ideal and used whatever God granted him to carry out whatever God willed and for the sake of world peace and with an awareness of why God had equipped him with the power of accomplishment and the power of ease.