Privateering coming back in the arctic, and pacific.
Anti-ship missiles, cruise missiles, drones and many other solutions would make it not sustainable for long enough to hurt these countries, specially if Russia nuked whoever gave support to such privateers as their new nuclear doctrine (that they presented in the last 48 hours) would likely require they answer like that.
Using environmental concerns to pass a UN resolution putting major restrictions on what can be shipped through it.
That’s why veto power exists, and if Russia lost their veto power then Russia would not follow anything comming out of there and the UN itself would likely go the way of the League of Nations.
“Accidentally” crashing a nuclear powered sub and having its reactor melt down up there so a choke point is unusable forcing ships to go through NATO waters to bypass radiation.
Two can play that game. Although I don’t think there are any chokepoints for that anyway.
Doing “military exercises” in the Bering Strait constantly.
If civilian ships got hit by the “exercises” that would be an act of war because to the victim that is just a direct attack on them.
False claims of Russian/Chinese boats entering US Alaskan waters constantly, and disputing the maritime boundaries constantly changing where they claim the line is to confuse captains. Firing warning shots at any ships that cross the line that they move every morning.
That’s the same as invading and taking Russian land and would likely be considered an act of war and nukes might fly. And there is also many ways to avoid crossing into the wrong borders anyway so it shouldn’t be a problem.
Plus this doesnt even take into account that the US is working to create a maritime exclusion zone around Chinas entire coast.
Again, the US can circle China as much as they want but they can’t fully block them without attacking China/Russia which would be considered an act of war.
This will work for now, but the end goal needs to be a huge railway project connecting Russia and China over land deep within their territory where its safe from any attack. High speed cargo trains running from the Chinese coast up into Russia all the way to Moscow would be an economic game changer.
It would be good but those lines are still attackable by drones and missiles, that’s why there is no way for the US to block them without nukes flying being a very high likelyhood.
:)