The warmonger grifters and profiteers have been lying about everything, including this non-guarantee. They think it fools people. They want to make a holy rule and obligation for their attempted holy war. Holy war is how they depict themselves, if you think about it.
As a backup, they try to palm off the lying idea that a sovereign nation can never change an agreement (in case it did say what their lies claim, which it
doesn’t.) If that
were the case (which it’s not) all agreements and treaties made in the last 4,000 are still in force.

That would include, for starters, German, French, British and U.S. military alliances with… Russia.