Before Tony Greenstein, secretary of the Brighton and Hove Unemployed Workers Centre, buys Tony Blair an air ticket to the International Criminal Court (ICC) at the Hague, he might as well make it a day return (Letters, May 10).

If Mr Greenstein were to visit the ICC's own website he would be able to read the prosecutor's own determination that the available evidence does not disclose any case for Blair to answer in respect of war crimes. If Mr Greenstein has any new facts or evidence, let him send it to the prosecutor.

Neither would Mr Blair have any case to answer in the crime of aggression.

The prosecutor has expressly stated he does not have the mandate to address the arguments on the legality of the use of force or the crime of aggression, as the ICC does not yet have the power to try it.

Even if it did, there would be no case for Blair to answer either for violation of customary international law or under the UN Charter.

Custom does not forbid the use of force against a state which is threatening international peace.

The UN Security Council decided many times that Iraq was doing so, and its decision to legalise the invasion after the event has been overwhelmingly recognised by the international community as lawful.

  • Michael Petek, Balfour Road, Brighton