It wouldn't be unreasonable at all if the FFX board told the...

It wouldn't be unreasonable at all if the FFX board told the Malian Gov to shove that idea up their jaksie.
In fact it's probably the moral response, AND the legal one. Especially if neither FFX nor LLL reclaim possession and are able to sell the mine, and/or it's equipment/plant at current market value.

Leo shareholders would be justified in suing the Junta under these circumstances IMHO using the ISCID. For starters the illegal border taxes about to some $30-$40 mill from memory. And this upcoming payment can be reasonably classified as extortion - looks to be another $35 mill? IDK. Then their is the forced sale to their preferred bidder only - restraint of trade. All pretty clear cut and easy legal victories if an independent arbitor looks at it IMHO.