"The entire international civilian presence and mission composition in Bosnia is predicated upon SFOR fulfilling the role that it has been set out to do in Dayton, " he said.

CNN: Fears over Bosnia troop cut plan

"Any change of SFOR's ability to fulfill this role will have serious consequences for the entire international presence in Bosnia and for its efforts to create a stable self-sustaining democracy, " Lehmann told Reuters.

CNN: Fears over Bosnia troop cut plan