… Indonesia and the Philippines have overall strong ties plus a record for reaching maritime agreements.

They signed an agreement in 2014 after two decades of talks on formal boundaries around their exclusive economic zones in the Celebes Sea – a deal aimed at improving resource cooperation.

“There’s a lot of cross-border traffic there, and so that’s caused some problems, but as much as it’s caused some problems it’s also been the focus of some agreements that have been fairly promising in terms of maritime boundary delimitation,” said Jonathan Spangler, director of the Taipei-based South China Sea Think Tank.

https://www.voanews.com/a/philippines-and-indonesia-work-together-to-block-isis/4197684.html

In Indonesian:

“Banyak lalu-lintas lintas-perbatasan disana, dan ini telah menimbulkan beberapa masalah, tetapi karena timbul beberapa masalah telah , daerah ini juga telah menjadi fokus beberapa persetujuan yang memberi harapan untuk menetapkan garis perbatasan maritim,” kata Jonathan Spangler, direktur Pusat Pengkajian Laut China Selatan di Taipei.

https://www.voaindonesia.com/a/kerjasama-indonesia-filipina-tumpas-ancaman-isis-/4199188.html