The short answer is: death merchants like General Electric, Halliburton, Westinghouse, Lockheed, Boeing, etc.
One has to ask, if the people who elected these leaders so obviously do not want these wars, who does? Eisenhower warned of the increasing power and influence of the military industrial complex and it seems his worst fears have come true. He believed in a strong national defense, as do I, but warned that the building up of permanent military and weapons industries could prove dangerous if their influence got out of hand. After all, if you make your money on war, peace does you no good. With trillions of dollars at stake, there is tremendous incentive to keep the decision makers fearful of every threat in the world, real or imagined, present or future, no matter how ridiculous and far-fetched. The Bush Doctrine demonstrates how very successful the war lobby was philosophically with the last administration. And they are succeeding just as well with this one, in spite of having the so-called “peace candidate” in office.
The war profiteers make money on the blood of dead women, children, and other non-combatants. The chief executive officers of these countries are covered in blood – it never touches them, but they are drowning in it.