President Obama Creates US Atrocities Prevention Board (click here)
It is obvious human rights violations effect him. He has established an "Atrocities Board" to officially address the global tragedies occurring every day of the week.
We are fortunate in the USA. We have benevolence and conscience governing our country with President Obama in the White House. He more than a decent man, he is a dedicated man requiring peace at home and abroad.
I don't believe we can measure the impact he has on the world, except, to realize violence is less and diplomacy with his Secretary of State is maximized to bring about a world of peace where people are valued.