[Malesherbes]

I believe that George F. Kennan before his death (at age 101) argued that the dissolution of the United States was desirable and inevitable. I cannot cite the specific article, perhaps his memoirs, but would appreciate it if someone can check me on this.

[MataHarley]

You may be thinking of Kennan's 1993 book, Around the Cragged Hill. However, at VTCommons is article honoring Kennan post mortem by Thomas Naylor in Aug 2005. This includes excerpts from some of his last letters that you may find interesting.