Ukraine war live updates: Russia says U.S. defended Kyiv too quickly after terror attack; Ukraine reshuffles security chiefs

This is CNBC's live blog tracking developments on the war in Ukraine. See below for the latest updates. 

Russian officials continue to accuse the West and Ukraine of involvement in the Crocus City Hall attack last Friday in which 139 people were killed.

Ukraine denies any involvement and the White House said last Sunday that "ISIS bears sole responsibility for this attack," using an acronym for the Islamic State militant group, which said it was behind the attack. White House National Security Council spokesperson Adrienne Watson added that there was "no Ukrainian involvement whatsoever."

On Wednesday, Russian Foreign Ministry spokesperson Maria Zakharova claimed the U.S.' initial rejection of any Ukrainian involvement was suspicious and said the Islamic State group was created by the West.

In other news, Ukrainian President Volodymyr Zelenskyy on Tuesday dismissed the secretary of the country's security council, Oleksiy Danilov, and replaced him with Oleksandr Lytvynenko, who served as the head of the Ukrainian foreign intelligence service.

No reason was given for the decision, which comes shortly after Zelenskyy replaced the head of the armed forces in a key military shake-up.

Russian officials continue to accuse the West and Ukraine of involvement in the Crocus City Hall attack last Friday in which 139 people were killed.

Ukraine denies any involvement and the White House said last Sunday that "ISIS bears sole responsibility for this attack," using an acronym for the Islamic State militant group, which said it was behind the attack. White House National Security Council spokesperson Adrienne Watson added that there was "no Ukrainian involvement whatsoever."

On Wednesday, Russian Foreign Ministry spokesperson Maria