I don't think they're gonna use any western weapon to strike directly Russia for the simple fact that they can't lol.
Everybody knows that Ukraine NEVER had those kind of weapons ( duh ) which means they also don't have the people with the technical knowledge/capabilities to operate them.
Also the long range missiles capable to reach Russian territory are remotely controlled NOT from Ukraine but from NATO ( USA ) satellites, WHICH MEANS that if by any chance one of those weapons everybody would know it wasn't even Ukraine who pressed the button worst they could have done was loading the thing.
You can watch Putin's interview of 28th may in response to Stoltenberg's declarations about letting Ukraine use those long range weapons, where he said that everyone knows those weapons cannot be used without space reconnaissance assets which Ukraine does not have, only NATO ( USA ) can operate them,
Actually there you go minute 14:50
If it's not clear he's basically saying in geo-politician words
" If by any chance one of those missiles crosses Russian borders we'll consider it a direct attack from NATO and by NATO ofc i mean the United States, again NOT Ukraine but USA themselves will be considered responsible "
So yeah it's a direct warning to the Americans......now yes Americans are stupid ( the higher ups ofc ) but cmon they're not that stupid so you can chill no one is attacking Russia territory lol
This is just a little show cuz they gave Ukraine all those weapons but now to the public eye it looks like we're not letting them use them and since we're paying some sweet billions for them we might as well make it seem like something is moving
In another recent interview ( if i'll find it i'll link it ) Stoltenberg made it somewhat clear that
yeah we're giving Ukraine authorization to use them but we're not gonna let them use them for real