The mission's job is to monitor U.N. and Arab League joint special envoy Kofi Annan's six-point peace plan that never got off the ground.

CNN: Ban: Syrian regime 'failed to protect civilians'

"All along we thought that's why they were here, " Kagame said, referring to the U.N. troops sent to monitor a peace agreement between the minority Tutsis and ruling Hutus.

CNN: From child refugee to Rwanda's reconciliation president

Withdrawing from Syria would ensure the safety of the team, but it could signal a loss of confidence in the hopes of a cease-fire and leave the U.N. without a way to monitor progress, the report says.

CNN: U.N. head outlines options for Syria mission