Following the Fiji coup of 2000 Kubuabola was appointed Minister for Information and Communications in the interim Cabinet formed by Laisenia Qarase.

In late 2005, he attempted to handle the problem of Fijian security guards, whom some accused of being mercenaries, operating illegally on the island of Bougainville.

On 4 May 2006 Kubuabola was posted to Tokyo as Fiji's Ambassador to Japan and Korea, replacing Ratu Tevita Momoedonu.

He remained in this position until July 2009 when he was named Minister for Foreign Affairs by the Interim Government.

[7] On 11 August 2022, he presented his letter of credence to Governor-General Cindy Kiro as High Commissioner to New Zealand.