Christmas celebrations around the world amid COVID-19 guidelines; President Kovind, PM Modi, Rahul Gandhi extend greetings; Protest enters Day 30 despite biting cold, farmer unions reject govt proposal for talks; After months of bartering, UK and EU finally strike post-Brexit trade deal; Amid stir, PM Modi to release Rs 18,000 crore to 9 crore farmers under PM-Kisan scheme; and more