The international criminal court must be allowed to carry out its work “without intimidation”, a group of 93 states has said in a significant public intervention intended to reinforce support for the judicial body.

In a joint statement issued late on Friday, the large group of ICC member states vowed to defend the institution and “preserve its integrity from any political interference and pressure against the court, its officials and those cooperating with it”.

The show of unity for the court and its staff comes in the wake of revelations published by the Guardian about efforts by Israel and its intelligence agencies to undermine, influence and intimidate the court as part of a nine-year campaign of surveillance and espionage.