The island nation of Vanuatu has been the driving force behind efforts to get the International Court of Justice to deliver its first-ever legal opinion on climate change."And you don't have a legal right to do that under international law.

In a landmark decision, the International Court of Justice found that polluting countries are now legally obligated to address global warming. In a unanimous ruling by a panel of 15 judges, the court said high-emitting countries do have legal obligations under international law to address the “urgent and existential threat” of climate change.