The plan would bring Israeli natural gas from giant fields in the Mediterranean Sea to Cyprus and Greece and from there to the rest of Europe.

Such a massive project, however, remains questionable as the undersea pipeline would run about 800 miles (1,300 km) at a depth of 1.5 miles (2.5 km), making it the longest and deepest underwater project in the world. Investors are concerned that the enormous cost of constructing the pipeline would inflate prices and render the gas too expensive compared to the relatively low fees on the open market.

Nevertheless, Israel continues to press the pipeline idea to an energy-addicted European continent that is anxious to be unshackled from its dependency on Russian gas.