<Anchor>
Russia's defense minister has argued that Ukraine is concerned about the use of so-called 'dirty bombs' that combine radioactive materials with conventional explosives.
Ukrainian President Zelensky countered that it was not Russia who made the radioactive threat.
This is reporter Kang Min-woo.
<Reporter>
Russian Defense Minister Sergei Shoigu had a phone call with the US, British, French and Turkish defense ministers one after another.
In a phone call, Shoigu said he was concerned that Ukraine would use a so-called 'dirty bomb' that mixes radioactive materials with conventional explosives.
Russia also said that the Ukrainian military is raising the risk of radiation leakage from the Zapori Nuclear Power Plant, one of Europe's largest nuclear power
plants .
More than 30 artillery rounds were fired at nearby areas.]
Ukraine slammed Russia for telling outrageous lies.
[Volodimir Zelensky/President of Ukraine: Everyone knows who the source of every conceivable filth in this war is.
It is Russia that used the radiation disaster at the Zapori Nuclear Power Plant as a threat.]
Rather, they said that Russia is not trying to overthrow Ukraine with what Russia is planning.
While there is an analysis that Russia is trying to find its own exit strategy by talking on the phone with Western defense ministers one after another, a fighter jet crashed into a residential area in Russia, killing two people.
It's been over a week since a fighter jet crashed in an apartment complex, killing 15 people.