Keep your important data on current mainstream storage. This is the only way to preserve it - copy data from old disks to new disks whenever you upgrade.
Of course at each upgrade you can also discard a lot of data that isn't necessary, but pictures and similar stuff shall be preserved. Data formats for images have been stable for the last decades. Even though some improvements have occurred a 25 year old jpg is still viewable.
However some document formats have to be upgraded to latest version since especially Microsoft have a tendency to "forget" their old versions. You may still lose some formatting, but the content of the documents is the important.
Others can grab the IPv4 addresses that Russia is using today. Of course - Russia can start using the rest of the IP addresses that the world uses too.
Well - when they figure out that the income channels that the internet provides suddenly stops they will probably take action.
There are two ways to write error-free programs; only the third one works.