noun
question of responsibility; issue of liability
Used when discussing who should be held accountable or where the blame lies, often in formal or serious contexts.
この事故の責任問題はまだ解決していない。
The question of responsibility for this accident has not yet been resolved.
政治家の発言が責任問題に発展した。
The politician's remarks escalated into an issue of accountability.
Compound of 責任 (responsibility) and 問題 (problem, issue).