If there is any good to come out of this, it is that the episode has already brought former enemies closer. It is heartening to see the international defence community pulling together.
The submarine community has always been very close. I was privileged to be at Lancaster University for the 100 year ?? celebration of the RN Submarine Service (which was off-the-scale awesome, given the attendance of submariners from across the planet) not long after the loss of the Kursk. A retired Russian Yankee class Captain presented and it prompted a quick whip round for the relatives...several thousand went in the hat in a few minutes.
Terrible time for the families, one hopes for a miracle, but time is so short and the job (of searching the ocean floor) is so big. Not good.