US continues to upgrade W88 nuclear warheads for Trident II intercontinental ballistic missiles with a launch range of 12,000 km

The United States is working to modernise its W88 nuclear warheads. This was reported by the National Nuclear Security Administration.

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UGM-133 Trident II - Wikipedia

What's on board now? Discover Los Alamos National Laboratory}

2023 Global Nuke Threat Update

The US has sent the nuclear-powered submarine USS Tennessee with 20 Trident II intercontinental ballistic missiles with a launch range of more than 12,000 kilometres to the UK

The United States will upgrade its nuclear arsenal with the Sentinel intercontinental missile — We are covering the agenda for you

2023 Global Nuke Threat Update

2023 Global Nuke Threat Update

US Nuclear Warheads Face $1 Billion Setback Thanks to a $5 Part

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U.S. Tests Upgraded Nuclear-Armed, Submarine-Launched Trident II D5 Missiles

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Fact Sheets & Briefs Arms Control Association

UGM-133 Trident II - Wikipedia