White supremacists simply don't care what other people feel or think.
They proudly armed Ukraine to weaken their enemy Russia, armed Israel to weaken Iran and the entire Middle East and armed Taiwan to weaken China in the future. If they achieved this, they were successful and will only be proud of it.
They never cared if they were going to kill millions of innocent people with this. They have already killed millions of indigenous people in America, millions of people in India, millions of Africans, millions of Chinese. They find this a sign of their indisputable strength and are proud of it, as those preferred by God with a mandate from heaven to do whatever they want.
Who really cares if they kill a few more Palestinians if it shows that they are superior and still in command and no one is doing anything to stop them?
Arabs are major savers of dollars. After this massacre against their Palestinian brothers they will continue to buy a lot of dollars and without any competition, simply because there will be no alternative to the dollar.
The dollar is held by US military power primarily, not economic security. If when an opportunity arises to arm America's adversaries, Russia, Iran and China get scared and do nothing, it's because they will never do anything while we're alive. Any alternative to US will be killed.
The US will arm itself more, create new military bases and show more dominance and pay everything with debt, and the Arabs and China will pay that debt, continue to use dollars and absorb inflation without interfering in the US' path. Unfortunately, that's all the world can see now.