Recent comments by United States and Israeli officials supporting the concept of a “Greater Israel” have raised alarm bells across the region and shed light on a vision once only rarely publicly spoken about.

An interview aired last week by the American right-wing podcaster Tucker Carlson with US ambassador to Israel Mike Huckabee started the current furore. Carlson, an influential figure who has been vocally critical of Israel over the past year, repeatedly asked Huckabee whether he supported Israel controlling all the land between the Nile River in Egypt and the Euphrates River in Iraq.

Huckabee, a Christian Zionist, would not disavow the belief that the Bible promised that land to Israel – even though it now encompasses all or part of Egypt, Iraq, Jordan, Lebanon, Saudi Arabia and Syria.

“It would be fine if they took it all,” Huckabee said, leading to anger from those countries and others in the region, many of which are close US allies.