Israel will defend itself in the United Nations' highest court starting on Thursday against allegations that its military campaign in Gaza amounts to genocide. South Africa asked the International Court of Justice to consider Israel's actions in light of the 1948 Convention on the Prevention and Punishment of the Crime of Genocide, drawn up in the aftermath of World War II and the Holocaust. The convention defines genocide as acts such as killings "committed with intent to destroy, in whole or in part, a national, ethnical, racial or religious group." The case will likely drag on for years. Here are...