核かくの傘かさ

expression, noun

nuclear umbrella

Refers to the protection a nuclear-armed state extends to its allies, deterring attacks through the threat of nuclear retaliation. Often used in political and security contexts.

• 日本にほんはアメリカの核かくの傘かさの下したにある。

  Japan is under the U.S. nuclear umbrella.

• 核かくの傘かさの信しん頼らい性せいが議ぎ論ろんされている。

  The credibility of the nuclear umbrella is being debated.