

Wdym? There is an official arrest warrant for him already. So far ICC member countries have just been silent to defiant when it comes to actually arresting him.
https://en.wikipedia.org/wiki/International_Criminal_Court_arrest_warrants_for_Israeli_leaders
Hungary sadly has alrady been the first country to actually violate their obligations to the ICC. I assume others will follow like Germany.
During Netanyahu’s visit, Orbán announced that Hungary would withdraw from the ICC. Per the Rome Statute, Hungary would need to formally notify the UN Secretary General. The withdrawal would become effective withdraw a year later. Hungary’s obligation to arrest Netanyahu was unaffected by Orbán’s announcement.[51]
On 3 April, the ICJP submitted a formal complaint to the Hungarian Minister of Justice stating that the Hungarian authorities were obliged to arrest Netanyahu in line with Hungarian obligations as a state party to the Rome Statute, under Article 86 of the Statute requiring it to cooperate with the ICC.
This is all that the article has about their goals. So it could be anything from planning a protest event to planning to blow up the parliament…
You never know when it comes to “terrorism” in the UK