How would a couple, or even a quartet, of Russian Mistrals be a threat to France or any other country?
The Russians are now building up their surface fleet rapidly.
The Vladivostok (Mistral) Class Amphibious assault vessels were designed to project Russian Marine/Army power to foreign shores with both amphibious and air assault, supported by attack helciopters from the vessel itself. That's their principle use.
In the Baltic, the Black Sea, or for that matter anywhere else these vessels could be escorted, supported, and defended by other Russian naval and air assets, these vessels would pose a threat.
The Russian admiralty boasted about the utility of these vessels before the Ukrainian crisis...indicating that in Gerogia he wished he had had them because it would have made a week long effort on his part something he could have used to defeat the Georgians in 40 minutes.
They have also said that this deal for these Mistral variants would advance what they could have tried to do themselves by ten years.
Make no mistake...such vessels will give Russia a much better amphibious capability than they have ever had before. Such a capability could be a threat anytime it was used...and the Russians are smart enough to figure out a time and place to use them...if they feel have to...where the threat against them would either be minimized or mitigated by the use of subterfuge, surprize, or the applications of their own forces at a time and place of their choosing.
As I understand it, the plan was for the first two to be assembled in Fracne (with the after section having been built in Russia), with a follow-on of two more where they would be entriely constructed in Russia. Clearly Russia has seen a need for these types of weapons although some people question if they have a well thought-out, long term strategy to best employ this type of capability.
I personally give them more credit than that. If they reached a point where they purchased them and were ready to bring them into the fleet, then I have to believe that they had thought about it in detail, and had a long term plan for their implementaion and use.
They know what they are doing.
It seems now that they will have to recoup their money through litigation on the international level (which will probably take them ten or more years), and make the best use that they can of the technology and knowledge they already gained in the process.
One thing to note is that the Russians recently launched a much improved LSD Type Amphibious Assault vessel, the new Ivan Gren, which will displace 6,000 tons fully loaded and are meant to be able to transport up to 100 main battle tanks, are a large number of troops, to shore.
However, it only has a small well deck and is more of a bow-door design and therefore not capable of significant over the horizon amphibious assault, though it does have a decent helo landing deck and hanger on the stern of the vessel which would allow limited air assault.
The Russians launched this one, another is well along in construction, and they plan a total of six of them
One of the Vladivostok class accompanied by two of these vessels would have the makings of a decent ARG for the Russians.