一いっ触しょく即そく発はつ

noun, noun which may take the genitive case particle 'no'

touch-and-go; explosive; on the brink

Describes a situation so tense that the slightest trigger could cause an immediate outbreak of conflict or disaster. Often used in political, military, or social contexts.

• 両りょう国こくの国こっ境きょうは一いっ触しょく即そく発はつの状じょう態たいだ。

  The border between the two countries is in a touch-and-go situation.

• 抗こう議ぎデモは一いっ触しょく即そく発はつの雰ふん囲い気きに包つつまれていた。

  The protest was filled with an explosive atmosphere.