There is no safe haven for the Black King in the Leningrad Dutch. In the King's Indian, anybody that knows how to play it knows that you don't play f5 until White has committed to d5, closing the center. If you play ...f5 while the White pawn is still on d4 and Black pawn on c5 or e5, you are asking to be killed.
The King's Indian is Sound. The Leningrad is dubious at best.
Leningrad Dutch starts with d4, f5. The pieces of black are then developed by g6; Bg7; 0-0; d6; c6; Na6 etc,. (Similar to King's Indian Defence).
The central pawn break comes with e5, and black has a pawn on f5 rather than on f7.
I just wanted to know what are the pros and cons of Leningrad Dutch.