No major power in their right mind would transit a ballistic armed sub through the canal on the off chance that that a local power decided to take a quick route to Nuclear weapon armed status, I think we can safely say that it's one of the little ones, of which there are probably two or three in the area already. Any idiot can face a crisis - it's day to day living that wears you out.
There is no worry at all about Egypt hi-jacking a sub. When our puppet government in Cairo joins the Islamic suicidists, then there might be cause. The Fates are kind.
