The conflict in Yemen shows no signs of abating anytime soon. The country is in the third year of a crippling civil war between the Iran-backed Houthi rebels allied with former president Ali Abdullah Saleh, and forces loyal to ousted president Abd-Rabbu Mansour Hadi.

Since 2015, Saudia Arabia has led a U.S.-backed military intervention against the Houthis, with the aim of reinstating Hadi.

Caught in all this are the people of Yemen. As bombs fall all around them, food and water continue to be scarce, and a cholera epidemic has infected more than half a million Yemenis and killed nearly 2,000.

The UN is calling it "the world's worst humanitarian crisis." This week, 62 NGOs sent a letter to the UN calling for an investigation into airstrikes that have destroyed schools and hospitals.

On Thursday, the family of the founder of humanitarian organization Red Crescent said he had died after being denied access to life-saving treatment in Sanaa. Abdullah Alkhamesi, 76, was one of Yemen's leading doctors, whose group saved countless lives since its establishment in the 1970s.

He was just the latest victim of conditions on the ground in Yemen, which according to the UN have left more than half of the country's health facilities unable to operate. The UN has also estimated that the closure of the airport has meant that 20,000 patients have been denied potentially life-saving treatment abroad.

All this puts medical workers in a difficult position — while working under such difficult conditions, they're also potential targets. And yet, they have to stay impartial.

Recently, a photograph of a survivor of an air strike on Yemen's capital, Buthaina Muhammad Mansour, believed to be only four or five years old, went viral, sparking outrage over the brutality of the ongoing war. The young girl suffered facial injuries and a broken skull after an Aug. 25 air strike destroyed the Sanaa apartment she lived in with her family, who were all killed in the blast.

On the frontlines

Médecins Sans Frontières (MSF) has been working with 18 hospitals and health centres across Yemen. "We remain neutral in the conflict," Justin Armstrong, head of mission for MSF, tells Day 6 guest host Peter Armstrong. "When we speak out, we speak out about the needs of the population and civilians. And so as long as we remain straightforward about what we offer and transparent in what we do, we can get access to some very difficult places."

Armstrong, who is based in Sanaa, says life for everyday Yemenis has been thrown into complete disarray by the conflict.

"You see millions of people displaced from their homes, seeking safety," he explains. "The economy is struggling massively, on the verge of collapse. Many people struggle to make ends meet.

"And for us as a medical organization, we see firsthand the impact on the healthcare system where hundreds of health facilities have been closed, dozens have been destroyed and the others that are still functioning are very much struggling with no funding, no salaries, and growing overwhelming health needs."

A big part of the challenge for health providers is the ongoing cholera epidemic, Armstrong points out. MSF has opened 22 cholera treatment centres across the country, and other organizations are doing their best to address the outbreak as well, "but it has been a struggle to build that capacity quickly to respond," Armstrong says.

"It started to take off in late April and sadly the response was not as fast as it should have been. It has picked up speed up as the outbreak has grown… but for many humanitarian organizations, cholera is something that they do, or should, have experience with and they should be able to provide adequate treatment."

CBC