Slovak military personnel unload an Ukrainian cargo plane An-12 Ruslan shortly after it has arrived from China, loaded with 74 tons of face masks, respirators and testers for the coronavirus COVID-19 at M.R. Stefanilk airport in Bratislava, Slovakia on March 25, 2020. - More planes are expected to bring more supplies from Turkey. (Photo by STRINGER / AFP)

Slovak military personnel unload an Ukrainian cargo plane An-12 Ruslan shortly after it has arrived from China, loaded with 74 tons of face masks, respirators and testers for the coronavirus COVID-19 at M.R. Stefanilk airport in Bratislava, Slovakia on March 25, 2020. - More planes are expected to bring more supplies from Turkey. (Photo by STRINGER / AFP)

Slovak military personnel unload an Ukrainian cargo plane An-12 Ruslan shortly after it has arrived from China, loaded with 74 tons of face masks, respirators and testers for the coronavirus COVID-19 at M.R. Stefanilk airport in Bratislava, Slovakia on March 25, 2020. - More planes are expected to bring more supplies from Turkey. (Photo by STRINGER / AFP)

Slovak military personnel unload boxes with a sheet reading "Let's overcome the difficult together, we don't give up" inside an Ukrainian cargo plane An-12 Ruslan shortly after it has arrived from China, loaded with 74 tons of face masks, respirators and testers for the coronavirus COVID-19 at M.R. Stefanilk airport in Bratislava, Slovakia on March 25, 2020. - More planes are expected to bring more supplies from Turkey. (Photo by STRINGER / AFP)

Slovak military personnel unload boxes from an Ukrainian cargo plane An-12 Ruslan shortly after it has arrived from China, loaded with 74 tons of face masks, respirators and testers for the coronavirus COVID-19 at M.R. Stefanilk airport in Bratislava, Slovakia on March 25, 2020. - More planes are expected to bring more supplies from Turkey. (Photo by STRINGER / AFP)

Slovak military personnel unload boxes from an Ukrainian cargo plane An-12 Ruslan shortly after it has arrived from China, loaded with 74 tons of face masks, respirators and testers for the coronavirus COVID-19 at M.R. Stefanilk airport in Bratislava, Slovakia on March 25, 2020. - More planes are expected to bring more supplies from Turkey. (Photo by STRINGER / AFP)

Slovak military personnel prepare to unload Ukrainian cargo plane An-12 Ruslan shortly after it has arrived from China, loaded with 74 tons of face masks, respirators and testers for the coronavirus COVID-19 at M.R. Stefanilk airport in Bratislava, Slovakia on March 25, 2020. - More planes are expected to bring more supplies from Turkey. (Photo by STRINGER / AFP)

An Ukrainian cargo plane An-12 Ruslan is opened shortly after it has arrived from China, loaded with 74 tons of face masks, respirators and testers for the coronavirus COVID-19 at M.R. Stefanilk airport in Bratislava, Slovakia on March 25, 2020. - More planes are expected to bring more supplies from Turkey. (Photo by STRINGER / AFP)