Professor Igor Panarin's view of the collapse of the United States is a reminder of of how some analysts in the USA speculated about the break-up of Russia proper, after the demise of the USSR.

RE Panarin's opinion about the Alaska Purchase, this excerpt from Wikipedia covers the topic:

The transfer of the Territory of Alaska in 1867 to the United States of America by Tsarist Russia, a transaction historically purported as an intrinsically legal sale, was claimed to be only a lease by Professor Igor Panarin, a leading Russian political analyst, in an interview with Izvestia published on Monday, November 24, 2008. The issue, however, is subsumed by the Doctrine of Laches: “Vigilantibus non dormientibus æquitas subvenit,” wherein Western courts of law going back to the Romans have consistently held that “equity aids the vigilant, not the negligent.” Russia might wish to unravel the Alaska sale, but the passing of 140 years before filing a valid claim in any legally recognized court is insufficient to avail itself in any court of law except a Muslim Sharia court under Koranic law. Until Russia adopts Sharia law under the Koran, it is doubtful that Professor Igor Panarin's claim would be sustained by court in the West. Additionally, there is no mention of a time period nor a lease in the original treaty document in which Russia ceded the territory to the United States.