Historical clue formulations

• Fusion weapon, familiarly — 2026-06-02
• What awakens Godzilla from the ocean, informally — 2024-08-09
• Cold War concern, for short — 2021-05-26
• Weapon of mass destruction, informally — 2020-07-20
• Big bang maker, informally — 2015-12-29
• Eniwetok blaster, informally — 2015-07-01
• Test ban subject, briefly — 2012-09-24
• U.S.S.R.'s Big Ivan, e.g. — 2011-12-10
• Certain W.M.D. — 2011-11-27
• 16-Across concern, briefly — 2011-05-07
• *Weapon first tested in '52 — 2011-01-23
• Blast maker, informally — 2006-10-03
• It was tested on Bikini, 1954 — 2001-04-25
• Weapon since 1952 — 2000-11-15
• Thermonuclear blast maker — 2000-02-07
• The first one went off in 1952 — 1999-08-14
• SALT concern — 1994-02-21
• Frightful force — 1994-01-27