Since the earliest days of the war, Zelensky, who was a TV star before being elected to the presidency, has made a point of dressing down. He doesn’t wear suits during public appearances, and he’s often seen in green crew necks and tees. While this may suggest to some that he isn’t focused at all on what he’s wearing, many understand the hidden significance beneath the president’s wardrobe choices.

Source: https://www.distractify.com/p/why-does-zelensky-wear-green