1948-2012: Israeli-Palestinian Conflict

A real perspective on one of the greatest conflicts of our times. This was caused by the european interests in the middle-east, the constant need for the British to meddle, influence, divide and rule strategy. At the end the sons of these ancient lands are dying for the concept of god that no-one has touched, seen, heard in our times. I am not an atheist - I am a believer of the pure & spiritual god and can tell fore sure that these deaths in the holy land for Land will have no winners !!

Details of Casualties : http://en.wikipedia.org/wiki/Israeli_casualties_of_war

1980-1988: Iran–Iraq War

The Iran–Iraq War, also known as the First Persian Gulf War was an armed conflict between the Islamic Republic of Iran and the Republic of Iraq lasting from September 1980 to August 1988, making it the 20th century's longest conventional war It was initially referred to in English as the "Gulf War" prior to the Persian Gulf War of the early 1990s.The Iran–Iraq War is considered one of the most violent conflicts since World War II.

Estimated Deaths: 500,000 to 2,000,000

1340-1368: Late Yuan warfare and transition to Ming Dynasty

The last years of the Yuan Dynasty were marked by struggle, famine, and bitterness among the populace. In time, Kublai Khan's successors lost all influence on other Mongol lands across Asia, while the Mongols beyond the Middle Kingdom saw them as too Chinese. Gradually, they lost influence in China as well. The reigns of the later Yuan emperors were short and were marked by intrigues and rivalries. Uninterested in administration, they were separated from both the army and the populace. China was torn by dissension and unrest; outlaws ravaged the country without interference from the weakening Yuan armies.

Estimated Deaths: 30,000,000


Source: http://en.wikipedia.org/wiki/Yuan_Dynasty#Later_years_of_the_Dynasty

1206-1368: Mongols

Mongol invasions progressed throughout the 13th century, resulting in the vast Mongol Empire which covered much of Asia and Eastern Europe by 1300. Historians regard the Mongol raids and invasions as some of the deadliest conflicts in human history. Brian Landers has offered that, "One empire in particular exceeded any that had gone before, and crossed from Asia into Europe in an orgy of violence and destruction. The Mongols brought terror to Europe on a scale not seen again until the twentieth century." Diana Lary contends that the Mongol invasions induced population displacement "on a scale never seen before," particularly in Central Asia and eastern Europe. She adds, "the impending arrival of the Mongol hordes spread terror and panic." Tsai concludes, "The Mongol conquests shook Eurasia and were of significant influence in world history."
Estimated Deaths: 30,000,000

1939-1945: World War II

World War II casualties and Second Sino-Japanese War (this estimate includes worldwide Holocaust and concentration camps deaths):

Estimated 40,000,000 to 71,000,000 humans lost their lives during the WWII, imagine the impact on cattle, farming, wild-life. 

Source: http://en.wikipedia.org/wiki/World_War_II_casualties