The NGO Doctors Without Borders (MSF) has challenged Swiss foreign minister Ignazio Cassis to explain his controversial Gaza statements. +Get the most important news from Switzerland in your inbox The NGO made it demand at a protest on Thursday at the Place des Nations in Geneva. + Strong reaction to Swiss foreign minister Gaza comments "This is a legitmate request," Reveka Papadopoulou, president of MSF Switzerland, told Keystone-ATS. "We want to tell him what we are seeing on the ground." On Tuesday, Cassis explained why Switzerland had not signed the letter from more than 20 European countries calling for aid to be steered by the UN and humanitarian NGOs. In his view, the letter is an attack against the controversial Gaza Humanitarian Foundation (GHF), which is the armed wing of Israel's plan to control humanitarian assistance. The foundation "could perhaps have done something", he said. Since last week, dozens of people have been killed at GHF distribution sites. "Military aid ...