Health Minister Khairy Jamaluddin has expressed disagreement over Nur Jazlan Mohamed's move in openly criticising Prime Minister Ismail Sabri Yaakob, saying that the Johor Umno deputy chief should have used proper internal channels instead.

Khairy pointed out that open criticism can lead to the perception that Umno was not united and can cost the party at the next general election.

With barely a year left before...