Murad Sezer/AP Photo, Mostafa Alkharouf/Anadolu via Getty Images
- Israel has indicated it will soon begin a ground offensive into Gaza.
- A geopolitical expert who embedded with US Marines in Fallujah said it will be "absolute hell."
- He said that Gaza's dense population and Hamas' vast underground tunnels will pose challenges.
Israel's anticipated ground invasion of Gaza will be far more destructive and difficult than the "absolute hell" that US Marines experienced in Fallujah in Iraq, a geopolitical expert said.