この問題について論じる必要がある

N5 この kono this N5 問題 mondai problem, question N3 論じる ronjiru argue, discuss, treat a topic N4 必要 hitsuyou necessary, need

N4 問 mon / to.u, to.i, ton question, ask, problem N4 題 dai topic, subject, sujet N3 論 ron / agetsura.u argument, discourse, argumentation N3 必 hitsu / kanara.zu invariably, certain, inevitable N3 要 you / i.ru, kaname need, main point, essence

N4 〜について ni tsuite Indicates the topic or subject being discussed, attaches to a noun, means about or regarding N5 〜が ga Marks the grammatical subject, highlights new information, can also show slight contrast in some sentences N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action N5 〜の no Indicates possession, relation between nouns, nominal explanation, or turns a verb into a noun phrase