1) The 200000 japanese who died were enemies who deserved it because the Japanese started the war and did not surrender. 2) The Korean and Vietnam war stalled communist expansion. Communists as you know kill people because they like to kill people - stalin , Mao, pol pot , Ho chi minh , Naxlabari - you name it. These war saved more lives. 3) Blood diamonds is a criminal actvity in which underworld of all nations are involved. Only Americans had the courage to expose their own faults and rectify it.
America is not perfect - it has many faults. But your stupid data only exposes your blindness.