The B team are playing the Republic of Ireland a week of Tuesday in AIrdrie (!). All three have made the squad before, and Adam has also been capped by the big team over the course of the last 12 months. His inclusion makes sense, as does that of Iwelumo as he has been in good form for Charlton. However, Broadfoot hasn't featured much in the past few games for Rangers after a decent start to his Ibrox career.
Iwelumo left Love Street for Scandanavia back in 1998, while Adam and Broadfoot were both part of the double winning team in 2006 before moving to Ibrox - Adam returning there that summer when his loan spell ended and Kirk making the switch last summer.
Story source: SFA