1Renato Cruz de Castro, "EDCA and the Projection of U. S. Air Power in the South China Sea", http ://amti. csis. org/edca -pro- iection - u - s - air - Dower - south - china - sea/.
3Allan Macatuno, "U. S. to Keep up Sea Patrols East of PH, Says Naval Execises", http://globalnation, inquirer, net/140061/us - to - keep - up - sea - patrols - east - of - ph - says - naval - exec.
4"Duterte Tells Obama Philippines may Seek Bilateral Talks with China on South China Sea Spat", http ://www. straitstimes, corn/o- pinion/understanding - the - basis - for - chinas - s - china - sea - claims.
5"U. S. Says It will Work with Controversial New Philippines Leader", http://www, reuters, corn/article/us - philippines - elec- tion - usa - idUSKCNOY124 F.