MOSCOW, March 29 — Russian prosecutors have asked the justice ministry to consider labelling Alla Pugacheva, the queen of Soviet pop music, as a “foreign agent”, a move that would officially designate Russia’s most famous star a foe of the Kremlin.

Pugacheva, known across generations for hits such as the 1982 song Million Scarlet Roses and the 1978 film The Woman who Sings, has expressed disgust with the Ukraine war.