All EU member states have signed the Rome Statute, the ICC's founding statute, and some EU governments have stated they will complete their obligations under the legislation if necessary.

Afghan Voice Agency (AVA) – Monitoring: "The states that signed the Rome convention are obliged to implement the decision of the court. It's not optional," Borrell said on Saturday in reference to the Rome Statute that has been signed by all EU member states.
The top EU diplomat made the remarks during a visit to Cyprus, two days after the ICC issued the arrest warrants against Israeli Prime Minister Benjamin Netanyahu and his former war minister Yoav Gallant for crimes against humanity.
The US rejected the ICC's decision and Israel described the court’s move as anti-Semitic.
Every time someone disagrees with Israeli policies, they are being "accused of antisemitism", Reuters reported Borrell as saying.
Meanwhile, Borrell, whose term as EU foreign policy chief ends this month, renewed calls for a ceasefire in the West Asia region where tensions have remained high amid Israel’s wars on Gaza and Lebanon?/Mehr News