Senate Democrats probe attack that killed 6 US service members in Kuwait amid Iran war

A group of Senate Democrats are investigating an early March attack on U.S. troops stationed in Kuwait, where six service members were killed and another 20 were injured amid the U.S. war with Iran.  The four Democrats — Sens. Elizabeth Warren (Mass.), Richard Blumenthal (Conn.), Kirsten Gillibrand (N.Y.) and Mark Kelly (Ariz.), who are all…