This tries to answer Which countries has the RF designated as maritime warring parties in its war against Ukraine? of the question, as well as, for the grain shipment context only:
Question: are there any formal statements that Russia has made clarifying which countries, besides Ukraine and Russia, it considers non-neutral in this conflict?
TLDR: Russia has NO reason to communicate this clearly and benefits from ambiguity.
This is akin to the many questions we've had here (I'll link some below in the comments) that ask Why does't country X provide some clarity to country Y concerning subject Z.
In many cases, being unclear about what is acceptable or not brings uncertainty and has an extra deterrent effect.
Let's look at what Russia has said:
IMO receives Russia's letter saying safety guarantees to be revoked with end of grain deal - Business & Economy - TASS
"The guarantees for the safety of navigation issued by the Russian side will be revoked," according to the letter. Moreover, Russia said that "proactive necessary actions and response measures to neutralize threats posed by the Kiev regime in the area will be taken," the agency added.
Russian Foreign Ministry said earlier on Monday that the Black Sea Initiative will terminate starting July 18, which means revoking navigation safety guarantees, closing the maritime humanitarian corridor, going back to a situation where the northwestern waters of the Black Sea will be temporarily risky to cross and disbanding the Joint Coordination Center (JCC) in Istanbul.
and
IN BRIEF: Grain deal terminated failing to fulfil obligations to Russia
Kremlin Spokesman Dmitry Peskov noted that Russia would immediately return to the implementation of the Black Sea agreements as soon as the Russian part of the grain deal is fulfilled
MOSCOW, July 17. /TASS/. The grain deal was terminated due to the fact that part of this initiative concerning Russia has not been implemented yet, Russian presidential spokesman Dmitry Peskov said on Monday.
Kremlin Warns of Ukraine Export ‘Risks’ After Exiting Grain Deal - The Moscow Times
“We can’t say how much and which countries are ready to assume these risks,” he (Peskov) told reporters, noting the Ukrainian ports’ “immediate closeness to the area of hostilities.”
As you can see, a study in ambiguity, despite the pronouncements by a Russian Navy captain.
OK, now let's bring in some game theory about who wants what outcomes.
Russia :
good outcomes:
Ukraine's economy suffers. There is a time-dependent component to that, as the harvest time for Ukraine is just about now and they need to clear the storage silos to put in this year's coming harvest.
-
About 95 percent of Ukraine wheat is winter wheat, planted in the fall and harvested during July and August of the following year.
Neutral parties get fatigued of the sanctions and economic effects and blame "The West" for the mess
Russia gets a better deal on its agricultural shipments (the official reason)
bad outcomes:
- Russia shoots at a ship carrying grain (friendly, neutral or unfriendly)
The West
good outcomes:
- Russia's good outcomes don't happen
- Russia gets the blame
bad outcomes:
- Russia shoots at a Western-affiliated ship carrying grain
Remember, the countries really needing the grain are mostly not "The West". To quote the Economist - The world should not let Vladimir Putin abandon the grain deal:
Instead, the world should press Russia to revive the grain deal—starting at the Russia-Africa summit. African leaders have no interest in higher prices and fragile global food markets. They could berate Mr Putin, and send a grain ship to Ukraine under an African flag.
This is the key part to understand - the risk comes from neutral countries ignoring the blockade.
- (group 1) The West won't send its ships, as they are part of the "unfriendly countries" and too closely countering Russia's aggression. This is risking a serious escalation.
- (group 2) Friendly countries, like North Korea or Venezuela, won't be running this blockade. China probably won't, even if it also needs the grain, that would embarrass its no-limits-friend too much.
- (group 3) The real audience for this threat is neutral countries that need the grain. As well as shipping insurers.
Telling the world who is considered unacceptable - as per this question - would allow neutrals, those most needing the grain - to take the risk. Russia being more specific about what it would do under what conditions - and especially naming neutrals as valid targets - would allow more traction to paint Russia in a negative light, as opposed to their current "Awww, shucks, if it was up to us, of course Good Russia would act to avoid world hunger". And in any case, they can just target civilian infrastructure in Ukrainian ports which they've been doing all along. And they can get a to a good deal of their goals - hurting Ukraine's economy - by inducing sufficient uncertainty to block shipments past the current harvest times, even if they eventually need to give in later.
p.s. Russia has designated "unfriendly countries" but they don't matter all that much here, they're "group 1" and will, for their own reasons, stay well out of the area.
The Government of the Russian Federation has approved on Monday a list of foreign states and territories that commit unfriendly actions against Russia, its companies, and citizens.
The list includes the United States and Canada, the EU states, the UK (including Jersey, Anguilla, the British Virgin Islands, Gibraltar), Ukraine, Montenegro, Switzerland, Albania, Andorra, Iceland, Liechtenstein, Monaco, Norway, San Marino, North Macedonia, and also Japan, South Korea, Australia, Micronesia, New Zealand, Singapore, and Taiwan (considered a territory of China, but ruled by its own administration since 1949).
The countries and territories mentioned in the list imposed or joined the sanctions against Russia after the start of a special military operation of the Russian Armed Forces in Ukraine.
p.p.s. being in a Western-protected convoy would make neutral ships a lot less neutral
Similarly, neutral merchant vessels “acquire enemy character and may be treated by a belligerent as enemy merchant vessels…” if they operate “directly under enemy control, orders, charter, employment, or direction” or resist “visit and search” (NWP 1-14M, ¶ 7.5.2). Thus, neutral merchant vessels are liable to attack without warning if they actively resist visit, search, or capture; refuse an order to stop; or sail under convoy with enemy warships or military aircraft. Engaging in these activities brings neutral merchant ships within the definition of a military objective, and thus targetable on sight by Russian forces (Newport Manual, § 8.6.5).
p.p.p.s. Apparently one ship has just (August 1st, 2023) called the bluff .
Israeli vessel breaks through Moscow’s Black Sea grain blockade - report