sentences:  His writings and interviews suggest the world is a dangerous place and that to keep the country safe, the United States must take a leadership role in the world, it must have strong allies with whom it works together on tough issues, and it must have a strong military, intelligence service, and diplomatic service in order to deter adversaries.Second, for the United States to be strong abroad, it must be strong at home.Morell says that "the most important determinant of a country's national security is the health of its economy and society" and that the thing that most keeps him up at night is the failure of our politicians to come together, to compromise, and to make decisions that move our economy and our society forward.