UN warns Syria starvation sieges are a war crime The United Nations warned Syrias warring parties on Thursday that starvation sieges were a war crime as it pushed for an easing of the dire humanitarian crisis .\rbr\rbr\rbr\rbrThe United Nations Secretary-General on Thursday called for an end to sieges on Syrian towns, warning all parties to the conflict that using starvation as a .\rbr\rbrImages of malnourished children and elderly from the Syrian town of Madaya gripped the world last week. A UN aid convoy finally reached the besieged town on .