A doctor at a border hospital in Reyhanli , Turkey , holds up a prosthetic hand being made for a baby who has fled the conflict in neighbouring Syria along with its family . The hospital is caring for some of the 1.6million Syrian refugees who are estimated to have crossed the border since the start of the armed conflict in 2011 . Turkey has one of the largest populations of Syrian refugees , and resources in border towns such as Reyhanli are being stretched near its limits . Heartbreaking : A doctor holds a prosthetic hand being made for a Syrian baby in a temporary border hospital in Reyhanli , Turkey . Recreating life : Abdulaziz Bastin , a prosthetics technician from Belgium , works on a new prosthetic leg for a young Syrian man in his mobile clinic at the Reyhanli border hospital . Help : Omar Hawt lost his left leg in a barrel bomb attack on Aleppo in Syria , and is one of thousands who have arrived in Reyhanli . Syria 's conflict has left more than 210,000 people dead and 11.4 million displaced since it began in March 2011 with peaceful anti-government protests , eventually escalating into a full-blown civil war after the regime brutally cracked down on the demonstrations . More than 12.2 million people in the war-torn country need life-saving aid and 3.9 million of those displaced have become refugees in neighbouring countries and further afield . Last week , the The United Nations children 's fund said Thursday that 14 million children are paying the price for warfare in Syria and neighbouring Iraq , with violence and hardship shaping their future . 'With the conflict in Syria now entering its fifth year , the situation of more than 5.6 million children inside the country remains the most desperate , ' UNICEF said in a statement . Rebuilding : Abdulaziz Bastin checks the fit of the new leg he has made for Syrian refugee Omar Hawt . Turkey has one of the largest populations of Syrian refugees fleeing the ongoing civil war with official estimates currently at 1.6 million , and border towns such as Reyhanli have received a large number of refugees though other refugees have settled as far afield as Istanbul . Emergency aid : A surgeon talks to two Syrian women in the temporary border hospital in Reyhanli , Turkey . The agency said up to two million children were living in areas of Syria largely cut off from humanitarian aid , and around 2.6 million children were out of school . Almost two million Syrian children are living as refugees in Lebanon , Turkey , Jordan and other countries , 'in addition to the 3.6 million children from vulnerable communities ' in the host countries , UNICEF said . 'For the youngest children , this crisis is all they have ever known . For adolescents entering their formative years , violence and suffering have not only scarred their past ; they are shaping their futures , ' said UNICEF chief Anthony Lake . UNICEF said conflict in Iraq has also forced more than 2.8 million children from their homes . At least 13 people were killed and 30 wounded as rebel and government forces exchanged fire in Syria 's second city Aleppo earlier today . The Syrian Observatory for Human Rights , a Britain-based monitor , put the death toll at 13 , including five children . The group reported at least 33 people wounded and said the death toll was expected to rise because of the number of seriously injured . The Observatory said the rocket fire hit several neighbourhoods in the government-controlled west of Aleppo , and came a day after at least four people were killed in similar rebel fire .
Nearly four million Syrians have fled to neighbouring countries , 1.6 million are in Turkey . The UN estimates that more than half a million people will need humanitarian assistance this year as the conflict drags on and supplies run out.