Against the backdrop of US warnings of a possible invasion by Russian troops on February 16, Ukrainian President Volodymyr Zelensky has declared the date a day of unity by decree. “We are told that February 16 will be the day of the invasion, we will make it the day of unity,” the head of state said in a video on Monday evening. Ukrainians are expected to raise flags across the country this Wednesday and sing the anthem at 10 am (0800 GMT). “Let’s show the whole world our unity,” the 44-year-old leader said. In his speech, Zelensky again rejected Russian accusations that Ukraine was making pre…