I have never thought of Corbyn as anti-Semitic. But he is certainly anti-Zionist. Being anti-Semitic is racist. (Anti-Semitism is "hostility and prejudice directed against Jewish people" ). I have no more love / hate for Jews than I do Muslims, Buddhists, Christians,, Hindus, Sikhs or any...
Then not spending billions on weapons is the answer isn't it? Plenty of other things we could spend the billions on that would actually benefit us all. Isn't Corbyn's honesty to be admired? Do you really think ol' mother May is going to hit the button?