Nukes all around? A fraying U.S. nuclear umbrella is pushing allies to weigh defense options, raising risk of a proliferation cascade

Nukes all around? A fraying U.S. nuclear umbrella is pushing allies to weigh defense options, raising risk of a proliferation cascade

As countries take more responsibility for their own defense and nuclear states step back from arms-control commitments, the question of proliferation arises.

Fraying U.S. nuclear umbrella pushes allies to weigh defense options, raising risk of proliferation cascade

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