Here’s an idea, little non-brother of ours: scrap your mutual defense treaty with the USA and defend yourselves. Oh, and you may want to start studying the Koran and/or learning Chinese.
In the last thirty years or so, in the Philippines, it has become quite popular to learn Chinese. A few of the high end private schools are Chinese-immersion.
So they are part-way there.
And for that matter, as usual in Asia, the domestic economy is dominated by Chinese tycoons. Who themselves, formerly very anti-PRC, are coming around ti being PRC sympathisers. The strong horse, of course.
The Muslims are an age-old annoyance, but its just that. Yet another natural problem, like typhoons, earthquakes and volcanos. All cause damage but they live with them and always have.