Lightly protected vehicles in Iraq such as the Humvee and the U.S. Army's new wheeled Stryker are providing far too little protection for troops and should be replaced with heartier substitutes, senior military commanders have warned. Roadside bombs, rocket-propelled grenades and heavy automatic weapons are taking their toll on lightly-armored U.S. military vehicles and, worse, on the troops riding in them – despite Pentagon efforts to beef up protection. Currently the Defense Department is hurrying to replace the thin-skinned Humvees with "up-armored" models as quickly as possible. According to the London Daily Telegraph, U.S. forces have added scrap armor plating,...