1.d4 players looking for some "new light" on dealing with the infamous Dutch Leningrad might want to take a look at this video lecture! IM Thomas Rendle walks through this highly interesting, and in some cases "ultra-aggressive", sideline and he gives it his two thumbs up. Note how quickly and often white makes the e4-breakthrough, and pay attention to IM Rendle's personal game review where he suffered a tough defeat.