psychological warfare

good command of, full use of

to make excellent use of, to have a good command of

business

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

(archaic) a battle, conflict, fight, war

mental state, mentality / psychology

business class