"... Abandoning Ukraine at this moment without the ammunition and weapons they need would be a massive gift to Putin and a strategic error for our own national security. Time is running out, and I will continue working with my colleagues in the Senate to find the necessary agreement to move this critical aid package forward."
Can I presume that Vance said basically the opposite?
Vance's stance is that he doesn't care. I can extrapolate that means he is against helping, so no involvement. Because even if he didn't care but wanted to give Russia a black eye, he'd pretend to care.