Why is the Philippines aligning itself with the US after years of close China ties under Duterte

After years of growing ties between the Philippines and China under former President Rodrigo Duterte, the Philippines has since renewed its close alliance with the United States. President Ferdinand Marcos Jnr has signed several agreements, including one that allows US troops to be stationed at additional Philippine military bases. The deal comes amid growing tension between Beijing and Manila over competing claims in the South China Sea.