Ukraine, Dec. 9 -- During the night of December 4, while Russian forces carried out a major aerial attack on Sloviansk, a city near the front line of the war in the Donbas region of Ukraine, a blast was felt just feet from the Doctors Without Borders/Medecins Sans Frontieres (MSF) staff house.

The explosion seriously damaged the building, two MSF vehicles, and an ambulance of our partner organization, Cadus. Thankfully, our colleagues were already in a shelter space and no one was injured.

"The explosion shattered all the windows," said Enrique Garcia Quiroz, MSF project coordinator. "From the shelter we saw a fire spreading to nearby homes. Families stood outside with their children as firefighters tried to contain the flames."

This b...