Answer: The United States will defend democracy and freedom any way it can.
Step-by-step explanation:
The main idea of John Kennedy’s statement is that the United States will defend democracy and freedom any way it can.
This can be seen in the address when he said "Let every nation know, whether it wishes us well or ill, that we shall pay any price, bear any burden, meet any hardship, support any friend, oppose any foe, in order to assure the survival and the success of liberty"
It simply means that the country will do anything possible to defend the freedom of its citizens and make sure that the democracy is being defended as well.