I don't know why you are talking about china while the point I was making was about India defending itself against china. Also indian % of GDP for military budget is 2.8 while for US its 3.75. US has no neighboring countries actively attacking it, India does.
edit: BTW, is there any actual proof that this whole military budget dissuades Russia and China in any way?
Not in % of gdp. The only metric that matters. The US economy is massive in size so of course the budget is a big number.
> one of which is china manages to defend itself with a tenth of the budget.
Everything is cheaper in China. You can do a lot more with one million there than in the US.