A top United Nations official on Monday told the Security Council she has `` run out of words '' to describe the worsening situation in Syria . `` Every time we use a new figure in relation to the Syrian crisis , we say that it is unprecedented . We have run out of words to fully explain the brutality violence and callous disregard for human life which is a hallmark of this crisis , '' Valerie Amos , the U.N. chief for humanitarian affairs said . Nearly 200,000 people have been killed in the 3-year Syrian conflict and one million injured , Amos said , describing a war zone with three combative parties fighting each other with no regard for the thousands of civilians and children caught in the middle . The Syrian government has used barrel bombs in densely populated areas and `` arbitrarily detained '' citizens and subjected them to serious beatings and torture . Armed opposition groups have taken locals hostage and killed civilians by using explosive mortar and car bombs . ISIS has committed `` mass victimization '' of civilians , including murder , enslavement , rape , displacement and torture , Amos said . All parties involved in the conflict `` continue to violate the most basic of laws with devastating consequences , '' she said . The under-secretary general described a particularly horrible situation for the country 's children . Reports of children being publicly executed , crucified , beheaded and stoned to death -- particularly by ISIS -- has increased in recent months . Other children , sometimes as young as 5 years old , are being trained at military camps , Amos said . `` This conflict is not only shattering Syria 's present , it is also destroying its future , '' she added . Locations traditionally identified as safe havens in conflict areas -- such as hospitals , schools and U.N. relief vehicles -- have not been exempt from attacks . 70 medical facilities across the country have been attacked over the last nine months , 60 by government forces , Amos said , citing statistics from Physicians for Human Rights . 150 medical personnel , including 97 in the line of duty , were killed over the same time period . While opposition groups have blocked medical supplies from entering besieged cities , the government `` continues to withdraw medicines , medical equipment and supplies , including for surgical intervention , such as antibiotics and injectable medicines from U.N. convoys , '' she said . Besieged cities are largely in deadlock . `` No one allowed out ; no aid allowed in . For years , '' Amos said before describing a new tactic in one besieged town : `` Tiny amounts of aid allowed in , giving people hope , but so little it can only help a fraction of those in need . People 's hopes raised and then dashed . Time and time again . '' The U.N. has identified air bombs , car bombs or mortar attacks on or near schools at least 35 times since February , resulting in the death of at least 105 children , Amos said . Amos urged the Security Council members to ensure all parties in Syria follow what they have outlined in resolutions : end indiscriminate use of weapons , protect children from violations , lift sieges on city and allow unhindered humanitarian assistance . `` Even in war , there are rules , '' she said .
A top the Security Council official says there are no words to accurately describe the Syrian conflict . `` We have run out of words '' to explain the violence , Amos said . Valerie Amos , the U.N. chief for humanitarian affairs , was addressing U.N. .