The previous GLSDB variant proved ineffective against Russian electronic warfare The United States has upgraded the Ground-Launched Small Diameter Bombs (GLSDB) to counter Russian jamming and is set to “reintroduce” them onto the battlefield in Ukraine within days, according to a Reuters report. The GLSDB, jointly developed by Boeing and SAAB AB, combines the GBU-39 Small Diameter Bomb with the M26 rocket motor, creating a weapon with a range of approximately 100 miles (161 kilometers). The