World's nuclear arsenal has quietly increased in several countries amid fears of World War III. A report highlighted the ...

Planes were a very new invention, they were rare and fragile. But when World War One started they became weapons. Pilots could spy on enemy targets and the first bombs were dropped from the air.

What was it like to live and work in a World War One trench? Find out in our guide. Which new weapons were used in World War One? What weapons were used during World War One and what effect did ...

Here is how many nuclear weapons the Russian Federation has and how this compares to the United States of America.