[William Cloud Hicklin]

Considering William's response regarding what the One Ring's power of "Command" would have allowed Aragorn to do had he claimed and mastered it. As well as potentially suborning the Orcs, could he not have suborned the Nazgul as well? In "The Hunt For the Ring" in Unfinished Tales when the Nazgul arrive at Isengard, Saruman says to the Lord of the Nazgul: "I know what you seek though you do not name it. I have it not, as surely its servants perceive without telling; for if I had it then you would bow down before me and call me Lord."

That opens a whole 'nuther can o' worms, because while the One Ruled the Nine, the Nine were by this time in Sauron's personal possession, and so he had direct and primary control over the wills of the Nazgul, even without the One. How that would have played out if an Aragorn or Galadriel (or Gandalf!) had claimed the One and thus in some way 'rule' over the Nine Rings, even while Sauron physically held them, is interesting. But here is what Tolkien had to say about the case of a person of lesser stature (Frodo) claiming the One:

When Sauron was aware of the seizure of the Ring his one hope was in its power: that the claimant would be unable to relinquish it until Sauron had time to deal with him. Frodo too would then probably, if not attacked, have had to take the same way: cast himself with the Ring into the abyss. If not he would of course have completely failed. It is an interesting problem: how Sauron would have acted or the claimant have resisted. Sauron sent at once the Ringwraiths. They were naturally fully instructed, and in no way deceived as to the real lordship of the Ring. The wearer would not be invisible to them, but the reverse; and the more vulnerable to their weapons. But the situation was now different to that under Weathertop, where Frodo acted merely in fear and wished only to use (in vain) the Ring's subsidiary power of conferring invisibility. He had grown since then. Would they have been immune from its power if he claimed it as an instrument of command and domination?

Not wholly. I do not think they could have attacked him with violence, nor laid hold upon him or taken him captive; they would have obeyed or feigned to obey any minor commands of his that did not interfere with their errand – laid upon them by Sauron, who still through their nine rings (which he held) had primary control of their wills. That errand was to remove Frodo from the Crack. Once he lost the power or opportunity to destroy the Ring, the end could not be in doubt – saving help from outside, which was hardly even remotely possible.

--Letter No. 246