When a leader develops the skill to convert negative conflict into creative tension, they have found the secret sauce for developing high performance teams.

FORBES: 8 Tips For Leading Those Who Don't Want to Follow

It is in this context that the effects of conflict have a negative impact on achieving the Education for All goals, she said.

UNESCO: Seminar on Education and Violent Conflict

Violent conflict has a profoundly negative impact on the planet, even when it occurs in remote places.

FORBES: Up for Debate: Traditional Journalism Stresses Conflict, and Exploits it

Dr Wood suggests that positive self-statements cause negative moods in people with low self-esteem because they conflict with those people's views of themselves.

ECONOMIST: Positive thinking's negative results

"The drive for more biofuels means more investment is going into those crops, meaning less land and less investment going in for food crops, causing a massive conflict and resulting in rising prices, which is having a huge negative impact, especially on developing countries, " said Clare Oxborrow, food campaigner for Friends of the Earth.

CNN: U.N. expert: Food crisis 'a silent tsunami'

In a statement, the Turkish military said it would act with "utmost sensitivity in order to avoid negative impact on local elements" -- a reference to keeping civilians out of the conflict.

CNN: Turkey launches major Iraq incursion

When those impressions are negative, they carry with them resentment and antagonism that inhibit peaceful coexistence and constantly threaten to erupt into open conflict.

UNESCO: WHO IS THE OTHER?

Recent conflict and the resulting disruption in both the education and health care systems are expected to have a negative impact on the level of HIV infection and it is now more important than ever to improve knowledge and awareness of the disease.

UNESCO: Protect, Prevent, Respect: Empower