Ethiopia this week became the 135th country to ratify the comprehensive nuclear test ban treaty (CTBT), which prohibits the explosive testing of nuclear weapons.
To enter into force, the CTBT must be ratified by 44 States listed in Annex 2 of the Treaty. So far, 34 of those States have done so.
See “Ethiopia ratifies Comprehensive Nuclear-Test-Ban Treaty,” CTBT Organization news release, August 9.
Background, history and current status of the proposed test ban may be found in “Nuclear Weapons: Comprehensive Test Ban Treaty” (pdf), Congressional Research Service, updated June 21, 2006.
Western states functionally manage trillions in global climate risk (permafrost, forest carbon, etc.) and can do so in ways that drive state economic development.
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It is difficult to assess from photos whether the Sentinel missile is longer or wider overall than the Minuteman, but the Sentinel clearly has a thicker second stage, which could potentially contribute to the missile’s extended range.