A Saudi airstrike on the MSF-run hospital was the fourth attack on its medical facility since the start of this year, the charity said. The bombing killed an MSF aid worker and 13 patients on Monday and wounded more than 20.
"We demand a prompt investigation into the incident," the spokeswoman said, adding the German government believed there could be no military solution to the conflict between the fugitive former government and Houthis.
"The warring parties must hurry and get back to the negotiating process under the UN aegis and refrain from taking measures that can obstruct talks," she concluded, according to Sputnik.
A Saudi-led coalition of mainly Arab states has launched airstrikes in Yemen since March 2015 to restore power to Yemen’s fugitive former president Abd Rabbuh Mansur Hadi.