The original leadership of the SWM (Ireland) left in sympathy with a small tendency in Britain and formed the Irish Workers Group which is now a tiny part of the League for the Fifth International.
The SWM was long overshadowed on the Irish left by Stalinist organisations such as the WorkersParty, but the fall of the Berlin Wall and the Warsaw Bloc regimes post 1989 saw it grow.
It should not be confused with the Socialist Party (Ireland), the Irish Republican Socialist Party or the WorkersParty (Ireland).