Scott Morrison and Prime Minister of Timor-Leste Taur Matan Ruak upon the ratification of the maritime boundary treaty (Image: AAP/Lukas Coch)

Hundreds of children are sitting in the heat of the Dili sun; their crisp white t-shirts read "Viva, Timor-Leste" in soda-brand font. Each child clutches two small flags mounted on thin plastic poles -- one Australia’s, one Timor-Leste’s.

They’re waiting in the grassy grounds of Palàcio do Governo, Timor-Leste’s government house, ahead of Scott Morrison’s arrival. The upcoming ceremony will officially mark the long-awaited ratification of the maritime boundary between Australia and Timor-Leste -- the troka nota, or "exchange of letters".

Journalists sweep past as kids raise and wave their flags. They offer shy smiles and peace signs to the cameras that will beam these images of hope and youth and new energy into thousands of televisions across the globe. Timor-Leste celebrates 20 years since its vote for independence is the headline. Morrison is the guest of honour.