Geraint Vincent travels to Donetsk in Eastern Ukraine, which three years ago was taken over by Russian-backed separatists and is now an illegal quasi-Russian state, self-proclaimed as the 'Donetsk People's Republic'. Penny Marshall visits the Mexico City suburb of Ecatepec, one of the most dangerous places on earth to be a woman, to meet those who live with the threat of violence on a daily basis. Nearly a year on from the failed Turkish coup, Rageh Omaar travels to Istanbul to find out how President Erdogan has gone from avoiding a hostile takeover to persuading voters to grant him sweeping new powers.