1. China
$166 billion spent in 2013; 2% of GDP
2. The US
$682 billion spent in in 2013, 4.4% of GDP
3. The USSR
$90.7 billion spent in 2013; 4.4% of GDP
4. India
$46.1 billion spent in 2013; 2.5% of GDP
5. The UK.
$60.8 billion spent in 2013; 2.5% of GDP
here the order is not considered.
These 5 Nations Could Win World War III - TheRichest
$166 billion spent in 2013; 2% of GDP
2. The US
$682 billion spent in in 2013, 4.4% of GDP

3. The USSR
$90.7 billion spent in 2013; 4.4% of GDP
4. India
$46.1 billion spent in 2013; 2.5% of GDP
5. The UK.
$60.8 billion spent in 2013; 2.5% of GDP
here the order is not considered.
These 5 Nations Could Win World War III - TheRichest

By my point of view there will be no overall winner due to many countries armed with nuclear bombs would be just mass killing by the millions no crops just a stone world ;D