Sri Lankan President Gotabaya Rajapaksa (R) greeting the newly-elected Prime Minister Mahinda Rajapaksa (L) at the swearing-in ceremony at Kelaniya Buddhist temple in Colombo, Aug 9, 2020 There are three categories of statesmen: those addicted to Twitter (Donald Trump, Narendra Modi, Javad Zarif, et al); those who shun it (Vladimir Putin, Angela Merkel, Xi Jinping, …