Security is far more important than any match or series. However, the strange thing is that how come they felt their is security threat just before the match ? They should have not come to pakistan if they were not comfortable playing here.
Also they now want to abandon the whole series without give explanation of who gave the news about the threat and all the details. I think there are many unanswered questions here.
Earlier Sri Lankan cricket players were targeted and for them they show how escaped with injuries and no one lost their live. So if there is intelligence information about a terror attack they will pull their player.