“Be strong and courageous. Do not fear or be in dread of them, for it is the LORD your God who goes with you. He will not leave you or forsake you.”
The role of the president "to lead the country" is very important.
Without a leader, we would be divided, and "united we stand, divided we fall"
its a simple as that, without a leader, we would be a lot more divided than we are now and without the president, well, there might be chaos
hope this helps
They were both the leaders of two nations very closely allied. They had a common enemy in the world wars. They would most likely help each other in war time.