Mr Kuleba said Western allies were not giving Ukraine military support fast enough because they had not been ready for a conflict on the same scale as World War One. And what he needed was artillery shells.
"We want partners to act faster," he said. "And if one delivery is postponed for one day, it means that someone is going to die on the front line. tiger789
"It means that someone who could have been still alive is going to die."
Nowhere has the demand for ammunition been greater than in the eastern city of Bakhmut where Ukrainian forces have been holding out for more than seven months against repeated Russian attempts to seize the city.
This, Mr Kuleba said, was "emotionally very challenging" because of the losses suffered.
But if Bakhmut fell, then other cities would be next: "So in order to save lives there… we have to fight in Bakhmut as long as we physically can."