Related Clues:

• It's obvious this can be explosive at last
• At last it's obvious - please God - that such warfare is not to be
• With 20 across, The sound of angling in the atomic age
• It's obvious at last that there's power here
• It's obvious at last that this may be explosive
• It's obvious at last it's for a Tom
• Like many a garage
• Speaking of new patent type of bomb
• Greek character to vindicate form of energy
• Dotty uncle has a right to some kind of family
• Greek character's explicit description of weapon
• Central rule can break down
• Nice one to come up with 20 type of energy
• London university admitted to threatening sort of war
• Vessel enables uranium to be transported with care, oddly