It's no surprise the United States pours more money into its military than any other country in the world.

In 2015, the US had a defense budget of about $597 billion, according to the International Institute for Strategic Studies' most recent World Military Balance report, released earlier this year.

In short, that's more than the next 11 countries combined.

The following graphic from the institute helps put things in perspective:

Even China's reported budget of $146 billion — good for second-highest in the world — looks modest next to that of the US.

It's safe to say the incredible funding the Pentagon receives is the driving force behind America's military strength.