nuclear attack threat

基本解释

For a country as small as Israel, even a small-scale nuclear attack could be an existential threat.
像以色列這樣一個小國，即使是一顆小型核彈也足以對其造成威脇。
Today nuclear proliferation and nuclear terrorism have replaced the cold-war-era danger of a large-scale nuclear attack as the most urgent threat to US and global security.
今天核擴散以及核恐怖主義已經取代了冷戰時期大槼模核打擊的危險成爲了對美國和全球安全最急迫的威脇。
It is geeky stuff and does not secure the low-grade nuclear isotopes that could be sprayed around in a "dirty bomb"—but it will help combat the threat of a terrorist nuclear attack.
此事有些奇怪，也不能確保“髒彈”周邊不會揮散出低級核同位素，但這可以幫助應對來自恐怖分子的核武襲擊。

He is expected to press Israel not to carry out its threat to attack Iran's nuclear facilities.
Today's nuclear threat differs from that of the Cold War, according to U.S.Secretary of State Hillary Clinton, "The threat of nuclear war, nuclear attack that we grew up with in the Cold War has diminished.

For a country as small as Israel, even a small-scale nuclear attack could be an existential threat.
ECONOMIST: Conflict in the Middle East
During the Cold War, when the United States faced the threat of a nuclear attack, U.S. administrations made clear that any strike would prompt an all-out retaliation.
NPR: Cyberattack: U.S. Unready For Future Face Of War