AAP convener who challenged Union Home Minister over drug menace. (Last name) (8) Crossword Clue

(noun)

1. the job of a head of a government department
2. a person authorized to conduct religious worship
3. a diplomat representing one government to another; ranks below ambassador
4. a person appointed to a high office in the government

(verb)

1. work as a minister
2. attend to the wants and needs of others