The US has the following MILITARY Allies via mutual defense treaties.
- NATO (27 OTHER countries, including 2 of the world's mightiest militaries)
- Japan (since World War II)
- South Korea (since the Korean War)
- Philippines (US-Philippine Defense Treaty)
- Israel
- Australia (ANZUS)
- Singapore (Five Power Defence Arrangements)
- Malyasia (Five Power Defence Arrangements)
- Penninsula Shield Force (Saudi Arabia, United Arab Emirates, Qatar, Oman, Kuwait, and Bahrain)
The US has lots of allies. In fact, you'd be hard pressed to find a country with more. Saftey in numbers, and all that.