Ukraine accuses Russia of using phosphorus bombs on Azovstal steel works plant

Ukraine has accused Russia of using phosphorus bombs at the Azovstal steel works plant in Mariupol. 

Ukrainian forces have been making a last stand at the facility, which is encircled by the Russian Army, for more than 70 days.

Now, an expert has said that Russia may be using white phosphorus bombs or incendiary missiles to attack the plant, in which hundreds of Ukrainian fighters are trapped. 

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