Heh! Are 'we' winning, or what?
Of course we can. If we are serious, which we are not. We are lending our money to men using it to buy nukes meant to be used on us or our allies. We are therefore fools.
How can we stop it without approval from others? Tell the others we will withdraw from the bank. Tell them they can trade with each other. Tell them they can fund their own navy to keep the seas clear. Tell them they can try to keep our navy off their trade. Tell them they can try to keep our missiles from landing on their cities. It is purely a question of how serious we are about it. And at present, the answer is "not very".