In 2021 there were 42 states which had neither signed nor become parties to the Rome Statute which established the ICC, non-members include China, India and Saudi Arabia as well as Russia which withdrew its signature.
UN Declaration of Human Rights in 1948.
Many UNpeace-keeping operations and political and peacebuilding operations include human rights related mandates whilst environmental concern is far more rare.
The ICC and special UN Tribunals often take years to prosecute individuals eg the trial of Milosovic - indicted in 1999, on trial in 2002 and died during trial in 2006