2. United States of America
The US holds the second position in our list of strongest nuclear power countries on our planet. It is the most powerful and certainly the most influential country in the world and naturally has one of the largest numbers of warheads. Like Russia, that comes later in the list, the US has an extremely strong defense mechanism. It’s worth noting that the US has a large number of SLBMs and ICBMs, more than any other country in fact.