The National Security Adviser, Nuhu Ribadu, has responded to attacks on him by Nasir El-Rufai, a former governor of Kaduna State.El-Rufai had, in a TV appearance on Monday, blamed the NSA for the ongoing probe of his administration by the Economic and Financial Crimes Commission (EFCC) and the Independent Corrupt Practices and Other Related Offences Commission (ICPC).He also accused Ribadu of using the inc...