Therefore I say: know the enemy and know yourself; in a hundred battles you will never be in peril. When you are ignorant of the enemy but know yourself, your chances of winning or losing are equal. If ignorant both of your enemy and of yourself, you are certain in every battle to be in peril.
With respect to Russia, my principal approach to Russia has been constant since I first came into office. Russia is an important country. It is a military superpower. It has influence in the region and it has influence around the world.
We should never hesitate to use military force, and I will not, as president, in order to keep the American people safe. But we have to use our military wisely. And we did not use our military wisely in Iraq.
We will continue to deepen our engagement using every element of American power - diplomacy, military, economic development, the power of our values and our ideals.
The requisites of government are that there be sufficiency of food, sufficiency of military equipment, and the confidence of the people in their ruler.
I feel a special kinship for our military. Because, unfortunately, I became a wartime president. And committed our military in the defense of our country to difficult assignments. I tell people all the time, I don't miss much about being president; I do miss looking in the eyes of people who volunteered to serve. And so not only do I feel a kinship, I feel an obligation and a duty to help.
People have killed only when they could not achieve their aim in other ways there is a broadened strategy, with intellectual weapons why should I demoralize the enemy by military means if I can do so better and more cheaply in other ways?