Cabinet Ministers
noun
The cabinet colleagues are the cabinet ministers. They're the people in the Cabinet that are all colleagues with each other. They just happen to be known as ministers.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
閣僚たちは、みんな反対しています。
All of the cabinet ministers are opposed.
閣僚会議は月1回ですよ。
The cabinet meeting is held once a month.
内部告発者により、この件に関する閣僚間のやりとりが明るみに出ました。
An internal whistleblower revealed the communication between the cabinet ministers regarding this issue.