Assertion: hydrogen bomb's power | /r/HasAspect | 40,000 thermo-nuclear devices
Facets:
value: by the end of the 1980s
type: TEMPORAL
value: in their arsenals
type: LOCATION
Source sentences:
text: By 1961 the Soviet Union had a weapon which yielded an explosive force equivalent to 60 million tons of TNT, and by the end of the 1980s the world's nuclear powers had some 40,000 thermo-nuclear devices in their arsenals.