Syria : At least 20 people were killed Tuesday , an opposition source says . Ban Ki - moon describes the humanitarian situation as ` ` grave and deteriorating '' He accused both sides of committing human rights violations . The refugee number marks 10 % of Syria 's population .
NEW : At least 155 people were killed Tuesday , an opposition group says . Ban Ki-moon describes the humanitarian situation as `` grave and deteriorating '' He accuses both sides of committing human rights violations . The refugee number marks 1 % of Syria 's population .