'I think we will know more if there is full transparency of everything that everybody knows. I do not believe that the information held by some is on the table,' he said in the interview.
'Who actually disabled ACARS [the plane's Aircraft Communications Addressing and Reporting System], who knew how to do it?
'If you eliminate the pilot on a suicide mission, I'm sure you could have put the aircraft in the South China Sea, rather than fly it for seven hours. So if he was on a suicide mission, he would have done it then. Who then took control of the aircraft? Who then knew how to disable ACARS and turn the transponder off? That is a huge challenge.'
When asked whether he can comprehend the mysterious disappearance of a plane in this day and age, Sir Clark responded:
'Therein lies this huge question mark in my mind. I know this did not have to happen, there is technology to track these aircraft and everybody will say that, Boeing or Airbus.
'That is where the conundrum is of mystery, that is where we must be more forthright and candid as to what went on, it is not good enough for the Malaysian military to say: "On a prime radar we identified it as 'friendly'".'