Some researchers believe that the Philippines' complete reliance on the security provided by the United States in the context of the Asian Cold War is the profound reason why it cannot refuse the United States' request to send troops to Vietnam; it is to avoid being directly involved in the Vietnam War, which is not related to its own interests and poses serious risks
The Philippines' deployment of engineers to Vietnam illustrates the weakness of its alliance with the United States
 The Philippines chose to send only a small number of civilian engineering troops, but it has always rejected the deep motivation of sending combat troops