Now THIS is extremely interesting.
There was _one_ documented case of nuclear pits being attempted to be sold by former Soviet authorities during the breakup of the Soviet Union. We actually flew a team over there, grabbed the pits from a warehouse that was unguarded and was only secured with a chain and padlock, then flew them back to the U.S.
The weapons under non-Russian control in Ukraine, Kazakhstan, and Belarus were HIGHLY monitored after the fall of the Soviet Union. There were no unknown weapons that were lost from the Trilateral accords states. Everyone on both sides and in the AEA knew how many and where the weapons were because they were bargaining pieces for arms reduction treaties prior to the collapse of the Soviet Union.
We also sponsored a program to pay and relocate Soviet scientists and engineers involved in the preparation of WMD, including their secret biological weapons programs.
There were Soviet broken arrows, of course. The most notable for nuclear terrorism purposes are the rumored 100 "suitcase" demolition munitions that are missing from the Soviet inventory, and some were in Ukraine, according to Alexander Lebed [1].
This claim is denied by the Russian Federation. Maybe he's talking about that in this video, but I get the sense his source is talking about the type of thing as I described above and reported in The Dead Hand[2] by David Hoffman.
There are weapons that were lost during nuclear submarine accidents, but none that I know of from bombs or icbms or cruise missiles, unlike the U.S. There are a total of 4 - 12 Soviet torpedo warheads at the bottom of the ocean, and maybe 6 -20 SLBMs at the bottom of the ocean.
Also, demolition munitions were rumored to have already been prepositioned in the U.S. during the Cold War. These were to be triggered by so-called sleeper agents if the war went hot. Somehow I doubt that those remained after the short period of friendly relations with the Russian Federation following the fall of the Soviet Union, and possibly were even removed during detante. However, if they were ever anything more than rumor, such weapons provided little tactical or strategic value, and, like the U.S. Davy Crockett and the MRBM missiles in Turkey and Italy, were dangerous risks to command and control that were easy political bargaining chips to trade during arms reduction talks. I doubt very much if they were even ever real in significant numbers.
I think the drone C.E.O. in the video does know what he's talking about regarding the detection and surveillance mission, but the suitcase nuke theory has a very small likelihood of being true and the source of said munitions being recently Ukraine for a false flag is just topical rumor mill paranoia.
The yields of these weapons ranged from .019 kilotons (this is real, from a U.S. weapon in 1956) to 10 kilotons, allegedly. Suitcase is not the proper term for them, they took a huge backpack to carry and a team of two to place and detonate (at least the U.S. versions). At one point we we talking about using them for strip mining, dam construction, harbor construction, and all kinds of civilian use-cases, as wild as that sounds.
The most likely incident, if there is one, is that we lost a weapon off of a plane over one of our most populated regions, and we're conducting a grid search day and night over the area by air to narrow down the location before cordoning it off and doing an arm to arm line search and decontamination of the area. Such an incident would be embarrassing, and cause unnecessary public panic and more oversight than the military would like to deal with if disclosed, so in the absence of truth the public is constructing a war of the worlds.
If that happened, there is a very real chance that the weapon would never be recovered, and eventually the search will be called off. The drone incidents will then slowly fade from the public eye, and would become yet another secret report that would only come out via FOIA a decade or more after the incident.
1.
Russian Officials Deny Claims Of Missing Nuclear Weapons | Arms Control Association
2. The dead hand summary
the dead hand summary - Google Search