Malcolm Speed, the former ICC chief executive, says security can never be guaranteed and the attacks in Lahore were a cricket administrator's worst nightmare. In a column in the Herald Sun he predicts it will be decades before Australia goes to Pakistan again.

Touring dangerous countries was previously an occupational hazard for elite sportsmen and women. After Tuesday's events, it has become a threat to the existence of professional sport in large parts of the world ...

I have wrestled with the issue of sending teams to Johannesburg, Karachi, Kingston and Colombo - all seriously dangerous cities. The conventional wisdom has been that sporting teams will not be a target for terrorists. High-level diplomatic advice was that cricket teams were unlikely to be targeted. That advice was wrong and the sporting world has changed.

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