[contentcards url=”https://www.wsj.com/world/middle-east/inside-little-gaza-where-israeli-soldiers-are-training-for-invasion-cc247726″] By Sune Engel Rasmussen, Anat Peled, Dion Nissenbaum and Dov Lieber TZE’ELIM, Israel—In the sun-torched plains of southern Israel, thousands of soldiers wait for…