CLEAN : Millions in Ethiopia facing worst drought for decades: UN

The video discusses the severe impact of the El Nino climate phenomenon on certain areas, highlighting the challenges faced by governments and the United Nations in responding to these issues. It emphasizes the limited resources available to national governments and the importance of international cooperation. The upcoming World Humanitarian Summit in Istanbul is mentioned as a platform for addressing these challenges. The video concludes by stressing the severity of the current humanitarian crisis, which is considered the most serious since World War II, affecting over 120 million people worldwide.

What is the estimated number of people in need of immediate support worldwide?

In what context is the phrase 'most serious humanitarian crisis' used?