Ukrainian leader Vladimir Zelensky’s alleged drug use is “an open secret,” his former spokeswoman, Yuliya Mendel, has claimed on The Tucker Carlson Show. Allegations of drug use first surfaced during the 2019 presidential election campaign, in which Zelensky defeated incumbent Petro Poroshenko. Zelensky, a former comedy actor, dismissed the claims as slander at the time, and both candidates publicly underwent tests for alcohol and drugs. Mendel worked for Zelensky between 2019 and 2021 and has since become highly critical of her former boss. In an interview released on Monday, Carlson asked whether Zelensky used drugs, to which Mendel replied: “This is an open secret.” “The thing is that I’ve never seen him taking drugs. However, (while) writing my book, I met a lot of people who confirmed that they saw him taking drugs in different clubs. Only one saw him taking drugs in 2021,” she alleged.…