Humanitarian engagement is necessary to respond to crises brought about by natural causes — earthquakes, famines, hurricanes — as well as man-made acts, generally war and violence. Sadly, today many nations suffer because of the lethal convergence of man-made and natural hardships. In 2004, a tsunami racked Sri Lanka after a magnitude 9.1 earthquake. At the time the country was in the midst of a 20-year civil war (it ended in 2009). Countries experiencing internal conflict such as Somalia have at the same time experienced devastating famines. Moreover, we increasingly face the question of whether man-made acts play a role in what appear to be natural disasters. There has been concern that fracking in Oklahoma might be triggering the state's rise in earthquakes. And consider that as oceans rise — a man-made result of climate change — people living in coastal areas will need to move, increasing the risks of crowding, shortages, pandemics and human conflict.