Make sure also that it will not be tied up to your known public address, just for security purposes because you'll never know possible consequences of your charitable act. We don't know what the Russian government is capable of. We know, a lot of Russians are disappointed and some are scared not to show their support to Ukranians. But it is their prerogative because a lot of them are indeed in fear of their lives, which, is very understandable to me. Also, check the official websites first. Scammers will be on the loose again.