TOPSHOTS - A young Syrian refugee shouts as he holds an anti-Syrian President handwritten note during a protest against the Syrian regime in Yayladagi on March 12, 2012. International mediator Kofi Annan called today for an immediate halt to the killing of civilians in Syria as he arrived in Turkey for talks on the crisis. Activists said that the Syrian army launched a new assault in the restive northern province of Idlib and the city itself, where residents are suffering "indescribable" humanitarian conditions. TOPSHOTS / AFP PHOTO / BULENT KILIC