Is the West in terminal decline? The UK tested a very expensive missile for a second time — and it failed again! Some have called the British armed forces a “laughing stock".
UK sub almost sinks itself with missile flop

Glossary
Nuclear deterrent - Nuclear weapons kept by a country as a warning to others not to attack.
Missile - An object (as a stone, arrow, artillery shell, bullet, or rocket) that is thrown, shot, or launched usually so as to strike something at a distance.
Symbol - A thing that stands for something else, or a sign.
Navy - A part of a country's army that works at sea, often on ships or submarines.
Nuclear weapons - A bomb or other weapon that uses nuclear energy to cause a big explosion.
Russia - The largest country in the world by area. It has a population of 144 million people.
China - A country in East Asia, home to 1.4 billion people.
Europe - The second-smallest of the world's continents. It has a population of 746 million.
USA - The United States of America is a country in North America. It has a population of 329 million.