Belhadj was part of the leaky Portsmouth backline that shipped 66 goals last season.
And he could do nothing to prevent them being relegated from the Premier League.
Yet it has not stopped him from claiming the Desert Foxes will target the 'weak' England defence when the two countries meet in Friday's crucial Group C clash.
Belhadj, 27, said: "It is a vital match against England, who are clearly the stronger side.
"But their defence is their weakness and we are going to play a lot better in attack than we did against Slovenia in our first match. It will be an open game and we must win - but so must England. They are the group favourites but anything is possible in football.
"On paper, England are the best team but they have had some difficulties, especially in the recent friendly against Japan. We have seen some gaps, especially in their defence. And, if we can take advantage of those gaps in the way Japan did, maybe it could make the difference and we could create history by qualifying from the group stages.
"I have a lot of respect for all the England players. I have played with some of them, such as Glen Johnson and Peter Crouch. But, on match day, I will fight for my national team. On the pitch, they will not be my friends."