On July 1, 14 submariners – sailors died in Russian territorial waters as a result of inhaling combustion products aboard a research submersible vehicle designated for studying the seafloor and the bottom of the World Ocean in the interests of the Russian Navy after a fire broke out during bathymetric measurements...
The submarine was towed to the Russian North Fleet headquarters in Severomork and an investigation is underway, according to the news agency.
I think the story contains multiple lies. First of all, that submarine is not used to "study the seafloor". It is a spy sub used to tap into underwater cables. Second of all, the Russian submariners have EAB systems just as the Americans do. See Emergency Air Breathing (EAB) Systems, Stations and Mask Unit (For submarine use). Basically it is a mask that attaches to a hose that attaches to a 100 psi air supply pipe. I used this in drills many hundreds of times over several years. The masks are stored in bags which are in containers literally every 10 to 20 feet. When the alarms sounds everyone is wearing a mask within 30 seconds. So NO WAY did 14 Russian sailors die from "combustion products".
And there is very little that is flammable in a submarine. Fire and flooding are two most common drills. Fires may start due to electrical shorts or generator fires - and those are very rare. Compartments are sealed immediately and everyone is wearing EABs. Here are the most likely causes of fires in a submarine. (1) Fire in the battery well - which can be caused by very minimal flooding - because of shorting the batteries. (2) torpedo "hot run" in the torpedo room. I don't think any modern navy has had one of those for decades. And I doubt this particular submarine, being a spy sub, would have that. And (3) electrical fire in a transformer or generator - and this is also very, very rare as those are monitored by a roving watch every 15 minutes - if one was getting hot or starting to smoke it would be shut down ASAP.
The fact the submarine had to be towed is indicative of a massive failure in engineering. Now the Russian navy today is pretty much crap - EXCEPT for their submarine force, although they have had other submarine accidents in the past, a spy sub is going to have a top notch crew.
We may never know the real truth, but just as a side note: VP Pence received an emergency order to turn around his flight and return to the white house.
Possibly unrelated: USAF FEST Foreign Emergency Support Teams C-32B 00-9001 departed Joint Base Andrews. What is FEST?
The Foreign Emergency Support Team (FEST) is the U.S. government’s only interagency, on-call, short-notice team poised to respond to terrorist incidents worldwide. The FEST deploys to assist and advise the U.S. Chief of Mission in assessing crises and coordinating U.S. government crisis response activities. The FEST includes representatives from the US Department of State, Department of Defense, the Intelligence Community, and the Federal Bureau of Investigation, and other appropriate agencies, such as the Department of Energy, as circumstances warrant. FEST composition is flexible and tailored to the specific incident and U.S. Embassy needs. The FEST provides specialized crisis response expertise to augment existing U.S. Mission and host government capabilities.