UK russia
Ballet soloist Oleksandr Shapoval reportedly died in combat fighting against Russia's invasion.
Moscow is having to look elsewhere for equipment as the effects of western sanctions cause their own supplies to "dwindle".
Volodymyr Zelenskyy claims Ukraine has retaken 6,000 sq km of its land from Russia.
The ceremony is expected to be one of the largest diplomatic gatherings in decades.
The Ministry of Defence said elements of Russian forces had been "severely degraded".
Russia has started to retreat at some places in Ukraine as the war enters its 200th day.
The monarchy has been dominating headlines and front pages since Thursday.
"It’s absolutely impossible to defeat Ukraine using those resources and colonial war methods," an ex-politician claimed in a surprising move.
A lightning counter-offensive has seen swathes of territory recaptured.
It comes a day after Moscow took a pop at newly-elected PM, Liz Truss.