Officials from almost 100 countries are at the International Court of Justice in the Netherlands, asking the court to issue an opinion on the responsibility of certain nations to protect the planet from climate change.

The International Court of Justice, the United Nations’ highest judicial body, is beginning landmark hearings on global warming. Here’s a guide.

OPEC has withdrawn from the oral statement portion of The International Court of Justice's advisory opinion on the Obligations of States in respect of Climate Change.