
Ukraine and Eastern Europe is a notorious black market for weapons. This is irrefutable fact and is backed by entities like Interpol, who have already said they are still finding weapons from the conflict in the Balkans on the black market even today.
The DOD has an entire acquisition wing that specializes in acquiring non U.S. standard weapons and sending them to various worst people in the world types around the globe. They source many of those weapons through Eastern Europe and I've documented on this blog their usage of 3rd party transport companies and entities like Bout himself to the end.
The GAO over the years has issued scathing audits of DOD acquisition, inventory and accounting. In the last 20 years the DOD has literally "lost" billions of dollars worth of hardware and even cash in places like Iraq.
There was a 4 to 5 month period last summer when the DOD didn't have the first rough ridin' clue where crap was going once it was in Ukraine, they admitted and the #neocons in Congress said in many words they didn't care.
You want me to bet based on the standard proclamations by the usual sources which is just

You won't discuss why Joe Biden's and the Biden's are all up Ukraine's ass, and you don't want to discuss the latest $400 million dollar plus grift on M1's when we literally have 1000's of the things just sitting around gathering dust right now.
As I type this the British Defense Ministry is making plans on how to handle if Challengers fall into the wrong hands. Also of note, the British only have 60 battle ready Challengers right now . . . which only affirms that lazy ass Europe/NATO members just lay on the comfy hammock of U.S. military protection which will cost over a trillion dollars this year alone once you add in all the non budgeted items for the UkroGrifters and beyond.