The possibility of a Japanese/German linkup in the middle east or India/Pakistan was a real possibility and Churchill knew it. Granted this was only long term speculation, it still was cause for concern. Besides, Churchill favored the Italian "soft underbelly" approach to liberating Europe.
- It could cut the British empire and supply lines in two.
- It would be extremely difficult to gain it back if this were to occur.
The effects would be felt all over, especially on the eastern front.
Had Stalingrad fallen, what was beyond the Volga? Open country. Tons of it. Waltz south, link up in the middle east, and you've got a tactician paradise... relatively easy to hold.
One front is always better than two
