Good, glad we decided to come to peace, after we ended the war years prior. Hopefully, now that President Trump was able to officially end the war between NK and SK, they too can work towards peace....but that wasn't going to happen until the war was offically ended....and we are one step closer to it, since the President of Peace, brought an end to the war.U.S.–Austrian Peace Treaty (1921) - WikipediaThey were part of the Central Powers, and yes both Hungery and Austria still exist....by your logic the 1921 agreement with Germany wasn't needed since the German Empire didn't exist.
I never said it was a peace treaty, I said he ended the war between NK and SK. He did.
U.S.–Hungarian Peace Treaty (1921) - Wikipedia
There is no peace treaty in Korea. There was an agreement to work towards a peace treaty.