Nursultan Nazarbayev
PER
Nazarbayev Nursultan Nazarbayev
 President Nursultan Nazarbayev, struggling to stem a deepening political crisis, accepted the resignation of his chief national security officer one day after five members of an elite national security squad were arrested in connection with the killing of a leading opposition politician. President Nursultan Nazarbayev, struggling to stem a deepening political crisis, accepted the resignation of his chief national security officer on Wednesday, one day after five members of an elite national security squad were arrested in connection with the killing of a leading opposition politician.