The US military engineers helping Egypt build a steel anti-smuggling wall along the strategic Philadelphi Route dividing Gaza from Sinai were suddenly recalled this week, DEBKAfile's military sources report, during the talks President Joe Biden and Egyptian president Hosni Mubarak held in Sharm el-Sheikh. Anxious to placate Turkey,Washington abandoned its half-a-billion dollar investment in the steel wall and turned to reviewing the Netanyahu government's future.