ith Syria's civil war entering its sixth year, hundreds of civilians are being killed weekly and at least 1.9 million continue to live under siege, lacking access to life-saving humanitarian aid. Few international aid agencies have been allowed to deliver relief supplies or to work within the country; those that have, are doing so at the high risk of being targeted.
Doctors Without Borders (MSF), is one of several humanitarian aid NGOs whose hospitals and medical personnel have repeatedly been attacked in Syria. The organisation operates a support programme to approximately 70 healthcare facilities run by Syrian doctors, where it provides medical supplies, salaries, advice among other services.
A recent MSF report showed that in 2015, 23 health staff in MSF-supported clinics were killed, and 58 others wounded. In the same year, at least 60 MSF-supported hospitals and clinics were hit on 94 separate occasions in aerial attacks or shelling.
Al Jazeera speaks to Mego Terzian, the President of MSF in France, where the organisation was founded, on the group's efforts in Syria.
READ MORE: Syria's Civil War Explained
Al Jazeera: What are the main challenges MSF is facing today?
Mego Terzian: We have had a great deal of human loss in the past three years; from the Ebola epidemic where we lost plenty of staff, up to Kunduz in Afghanistan where the hospital was bombed by the US army and where we lost 14 staff members and more than 20 patients. In Aleppo, and in Syria in general, too, where several of our colleagues have been killed in the past three or four years.
The only challenge is for humanitarians to access the population and vice versa.
In Yemen, the situation is also very difficult; we had several injured humanitarian workers and we've simply been very lucky that there haven't been any deaths. Now it is a question within our organisation - whether the number of humanitarians being killed today is higher than it was in the 80s and 90s. I honestly don't think so.
I think since the creation of our organisation we started to face problems and a lot of human loss. Although we may be feeling that today it is worse, the difference is that before we didn't have the tools to record statistics showing the exact number of workers killed and injured.
We don't have the exact details of the past but we unfortunately had many losses in South Sudan during the war with the north in the 90s, in Afghanistan in the 80s, in Rwanda in 1994 and in Congo as well. Unfortunately it is not something new.
Al Jazeera: How does that compare with the situation in Syria?
Terzian: The challenge in Syria is [securing] the safe access of aid to the population, which has not been feasible for months now. For example, the bombing of a humanitarian convoy in Aleppo a few weeks ago was horrible and unacceptable. Many similar stories happened during this conflict.
Today I suspect the regime will not accept any convoys inside eastern Aleppo to evacuate severely wounded kids or patients to safer areas in Idlib or other places.
The only challenge is for humanitarians to access the population and vice versa; the population are facing big difficulties reaching health facilities and to be treated safely. It's really chaotic.
'The regime has adopted the policy of terror against the population,' says Terzian [Abdalrhman Ismail/Reuters]
Al Jazeera: Do you think the attacks on the hospitals in Syria are deliberate?
Terzian: Since the beginning of the war in Syria, the regime has adopted the policy of terror against the population. There has been indiscriminate bombing of civilians, including the hospitals. The hospitals are part of the general plan of terror adopted by the regime since the beginning of the conflict.
At the same time it is true that in this conflict if you are conducting medical activities in the zones controlled by the opposition groups, you are equal to criminals, even to terrorist groups [by the regime]. There is the general policy of terror, including the plan to target the humanitarian mission, which is suspected of supporting the opposition groups or the people that are pro-opposition directly or indirectly.
So, you are an enemy to them [the Syrian government] as well.
We negotiate with everyone including the Syrian government to see whether we can operate even independently.
This is the problem with the conflict in Syria. The Syrian context has been the most difficult context for MSF in the last 15 years. I was part of the operations in the Ivory Coast intervention in the last crisis. I was also very involved in the Libya crisis.
I was involved in Somalia and the Central African Republic too. It is true that Syria is the most violent context that my organisation has intervened in because of the policy of terror that the Syrian regime has adopted since the beginning of the armed conflict.
Al Jazeera: MSF has been trying to operate out of government-controlled areas in Syria. What has happened with these efforts?
Terzian: We are still negotiating. We started negotiating in April 2011 with the Syrian regime directly and indirectly in order to see whether we could intervene in the county officially. They rejected the dialogue almost systematically every time.
So we decided in June 2012 to cross the borders illegally from the neighbouring countries to work in rebel-controlled areas. Maybe we were illegal for the Syrian regime, but at least we were legitimate. The aid system until now and from the beginning of the current conflict in Syria is not well balanced.
Most of the aid from the United Nations and International Red Cross is going to the government-controlled areas via the local Syrian Arab Red Crescent. The aid is being distributed to the places under the Syrian government control, and very little aid is going to the zones controlled by the opposition. This has been happening since the beginning - it is not new.