Nuclear, antimatter, strange matter, whatever the mechanism - will humans come together and develop a bomb with yield at least 10 times greater than the most powerful thermonuclear weapon developed so far?

Tsar Bomba had yield of 50 megatonnes, so a positive resolution requires a weapon releasing at least 500 Mt.

• Must be a single bomb, an aggregate of smaller warheads does not count;

• The bomb itself must release the energy, to exclude e.g. asteroid redirection or inducing earthquakes