Now, similar question to you: On what basis are you basing your trust that Ukrainian leadership is not benefiting from selling such arms to others?
For me it’s the lack of evidence that they are. That and the fact that Ukraine is in a fight for its very existence and they know the whole world is watching. There probably is some corruption and skimming going on, but even so it’s still worth giving them the tools to kill the invading orcs until they give up and leave or Putin swings at the end of a rope.