ICC is a confederation based court and save for that it lacks the real power in stricto sensu. It gave out a warrant for the arrest of Putin by member states but still that's yet to happen, recently same Putin met with Chinese president. Nobody can arrest Netanyahu, do that at your own country's risk.
“ICC seeks arrest warrant for Netanyahu, Hamas over ‘war crimes’ - Vanguard”
“ICC seeks arrest warrant for Netanyahu, Hamas over ‘war crimes’ - Vanguard”