2) Russia (PwrIndx: 0.2355)

Russia is one of the five recognized nuclear weapons states. It possesses large stockpile of weapons of mass destruction. The Russian military has more than 1.04 million personnel on active duty. The nation has the second largest fleet of ballistic missile submarines.

1) United States of America (PwrIndx: 0.2208)

The United States of America accounts for 37 percent of global military spending. It is the world’s foremost military power. The President is the commander-in-chief of the nation’s armed forces. The armed forces has more than 1.4 million personnel on active duty.