KYIV: Pressure is mounting on Ukrainian President Volodymyr Zelensky to take stronger action to show accountability in the face of a corruption scandal presenting the greatest threat to his government since Russia’s full-scale invasion.

Last week, Zelensky dismissed two top officials and imposed sanctions on close associates after government investigators revealed that $100 million had been embezzled from the country’s energy sector through kickbacks paid by contractors.

But that hasn’t quieted the political storm. After more than three years of war in which Ukrainians face regular power outages as a result of Russia’s fierce bombardment, corruption in the energy sector isn’t sitting well with the public. Calls are growing for Zelensky to remove his longtime chief of staff, Andrii Yermak, who many consider to be Ukraine’s de facto vice president.

Neither Zelensky nor Yermak have been accused of any wrongdoing by those leading the corruption investigation. Yet Zelensky’s political opponents — as well as allies worried the scandal could weaken their parliamentary governing coalition — say more senior leaders need to be held accountable to restore public trust.

Zelensky’s critics say it’s also important to bolster credibility with Ukraine’s Western allies, whose support is vital to the war effort and in eventually negotiating an end to the conflict.