By our allies the Ukrainian government not the Russians.
Why do you keep peddling this BS that only the Ukrainians are firing artillery? The article directly contradicts your statement by pointing out that the loyalists(Ukrainians) held the airport, until after nine months of shelling(Ruskies) forced them out and left it a "twisted shell".
"Until late January, the airport was still under the control of loyalists determined to retain the strategically important building. However, after nine months of bombardment, most fled, leaving behind the twisted shell of what was once a monument to the country’s bright future. Only bent steel, burned out aircraft and a pockmarked air traffic control tower remain."