It also demonstrated the peculiar utility of otherwise unusable nuclear weapons: to deter a conventional attack.
And the weaker party, if nuclear capable, invariably holds out the threat of nuclear war as a way to deter conventional attack.
And it says we'll never use our nuclear deterrence to prevent a massive conventional attack either against the United States or against our allies.
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Russia might use nuclear weapons in response to a conventional attack, says Mr Rybkin, in part because its own conventional forces are in so parlous a state.
Not since Galileo redefined our understanding of the Earth's place in the universe has there been such a vigorous attack on what passes for conventional wisdom.
Hamilton will continue to run with an aerodynamic package suited to Monza's low-downforce circuit, which includes a rear wing with a lower angle of attack - approximately 40 degrees compared to Button's conventional rear wing, which is raised at around 70 degrees.
This gives rise to the worry that the distinction between conventional and nuclear warfare would be blurred, leading to a lower threshold for a nuclear attack, and thus to the undermining of the global non-proliferation regime.
Between 1993 and 2006, that requirement evolved from the desire to maintain the capability to defeat two conventionally armed aggressors to the need to conduct a campaign against a conventional adversary while also waging a long-duration irregular warfare campaign and protecting the homeland against attack.
Over time, the requirement evolved from maintaining the capability to defeat two conventionally armed aggressors to a more complex formulation in which the U.S. military was asked to be able to conduct a single campaign against a conventional adversary while waging a long-duration counterinsurgency and stability campaign or protecting the homeland against attack and providing support to civil authorities.
From the conventional to the unconventional, from nations seeking weapons of mass destruction to the cell of terrorists planning the next attack, from the old danger of piracy to the new threat of cyber, we must be vigilant.
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