if there is no peace to keep you cannot send in "peacekeepers".
"Peacekeepers" can have either a Chapter VI mandate for peacekeeping (=keeping the peace) or a Chapter VII for peaceenforcement (trying to create peace, where none exists).
The bluehelmets operating under a Chapter VII peace enforcement mandate are also called "Peacekeepers".
"Peaceenforcers" would be a better term, but the charta (?) and everybody only refer to them as "Peacekeepers". Atlantic Review - A press digest on transatlantic affairs edited by three German Fulbright Alumni