All deleted tweets from politicians

RT @Riekstins__M: OTD 4 years ago - Boris Nemtsov - Russian politician was killed. Together with colleagues from the #EU, #USA, #NewZealand - laying flowers at the place of his assassination on Bolshoy Moskvoretsky Bridge, central Moscow https://t.co/8Sgd2ZpCMO

RT @NobelPrize: Today we celebrate the bravery and achievements of Werner Forssmann, born #OTD, who put his life at risk by performing the first human heart catheterisation - on himself. The experiment in 1929 paved the way for many types of heart studies and led to a #NobelPrize. https://t.co/xawvDVK3TX