Originally Posted by
TesalionLortus
To me, it sounds like you overvalue the meaning of diplomacy in a setting like this. Historically, peace is rather fragile, and that you officially achieved it (especially if that's regarding your hateful foe) is no guarantee of peace at all. It was said Aragorn made peace with the Haradrim after the coronation, which was already adapted but these were Far Harad representatives. What does it mean if no one else send a representative to seek out peace? Clearly nothing friendly. Sure, Aragorn might try to reach out, but it doesn't mean it's something to cultivate like a fool, especially that any word from the more unfriendly clans shouldn't be trusted. Plus, to guard peace, it's in Aragorn's interest to see Harad or Rhun people squabble amongst themselves for a time, not meditate and put someone "on a throne" in each key region, which then presents perfect opportunity for this someone to maybe betray his word and turn against Gondor. This kind of thing works if you actually have armies at the ready and an intention to use them in case things go wrong - so you're basically creating a vassal in a foreign land. But if not - and here it's clearly Aragorn who would rather have days of peace, not perspective of involving Gondor in another war at this time (though he might be more willing in Fourth Age) - then there is nothing to motivate such a friend/vassal to abide by their word. For example, with Umbar, you can't trust a pirate that he will not remain a pirate and won't turn against Gondorian merchant vessels once Umbar is united and on a stable foot again. In which case, what's even the point of striving for peace and solving their foreign internal problems to "achieve it" (with your means and resources spent)? There really is none. Aragorn should strive for it of course, within limits, receive emissaries if they wanna come or send letters/some diplomats with good words, but otherwise he shouldn't beg for it nor spent his own resources, time and effort to achieve this geopolitically fragile goal. He would be no good king if he tried that, more like a naive king, still wet behind their ears.
Sounds like he is right but hardly applies to Aragorn situation since that's exactly the case, Aragorn does not want to retaliate and be aggressive here. All he gotta do is just sit and show good will, either they take it or they don't (in which case they're busy with internal affairs anyway and don't have the strength to threaten Gondor), but he does not need "peace at every cost possible" meaning wasting his best agents and resources on pressuring them into peace by meddling in their internal affairs and supporting one faction or another, albeit without the means to ensure their loyalty/friendship (how is that logical? :P). There is no self-sabotage to his rule by enjoying the privileges secured by his military victory against Sauron and then choosing to show good will to his enemies if they're willing - but otherwise stay away and let them handle their own affairs, just watch from afar and look for any signs of real danger, like unified Harad under someone nasty, but that wouldn't realistically happen too quickly, given the death of Black Serpent and political defragmentation that follows.