Ukrainian President Volodymyr Zelensky said he cannot say with certainty if chemical weapons were used in the besieged city of Mariupol.
“We take with great attention yesterday's reports on the use of munitions with a poisonous substance in Mariupol against the defenders of the city. It is not yet possible to draw 100% conclusions about what kind of substance it was,” Zelensky said in a video address on Tuesday. "It is clear that it is impossible to conduct a full investigation and full analysis in the blocked city."
Zelensky warned other leaders to pay attention to the possibility of chemical weapons put in use.
“However, given the repeated threats of Russian propagandists to use chemical weapons against the defenders of Mariupol and its repeated use by the Russian army, such as phosphorus munitions in Ukraine, the world must respond now,” he cautioned. "React preventively. Because after the use of weapons of mass destruction, any response will not change anything. And it will only look like a humiliation for the democratic world."
More context: Reports that chemical weapons were used in Mariupol have not yet been confirmed by the United States, State Department spokesperson Ned Price said in an interview with CNN Monday.
On Tuesday, Secretary of State Antony Blinken said the United States could not confirm the use of chemical weapons in Ukraine but noted that they “had credible information that Russian forces may use a variety of riot control agents."
CNN cannot independently verify that there has been any kind of chemical strike in Mariupol. CNN teams on the ground have so far not seen evidence of such an attack, or any imagery from Mariupol sources to verify this.