Currently,  according  to  the  latest  data  of  the 
General  Prosecutor's  Office,  more than  32,000 
war crimes have been registered, and this raises 
questions about the ability of our national system 
to cope with such a huge number of crimes and 
to  effectively  conduct  investigations  (Bilous, 
2022). 
 
So,  let's  consider  the  previous  practice  of 
resolving  war  crimes  by  the  International 
Criminal  Court.  Decision  on  the  situation  in 
Kenya  in  2011  (Case  ICC-01/09-02/11-274, 
2011). There were 2 pending cases related to the 
situation  in  Kenya,  but  Kenya  wanted  to  deal 
with these two cases independently. The Kenyan 
government approached the court from the point 
of  view  that  the  International  Criminal  Court 
recognizes the jurisdiction of Kenya and pressed 
precisely  on  the  principle  of  complementarity, 
that  the  primary  task  of  investigating  and 
prosecuting lies with Kenya as a state that "must 
deal with itself". Kenya based its arguments on 
promises to conduct an investigation in the next 
3-4 months, but there was no concrete evidence 
from the Kenyan government that the suspects 
were  being  investigated.  The  decision  of  the 
International  Criminal  Court  (including  the 
Appeals Chamber) was based on the fact that the 
Kenyan government must have something more 
specific than just an intention to investigate now 
or in the future (Bilous, 2022). 
 
This confirms that Ukraine should work on the 
effectiveness of war crimes investigations. It is 
equally  important  to  establish  cooperation, 
because  the  International  Criminal  Court 
depends on cooperation and can cooperate with 
civil  society,  and  international  organizations 
(UN,  Interpol, EU, International  Committee  of 
the Red Cross). 
 
An equally important body that investigates war 
crimes is the UN criminal court. However, in the 
conditions  of  international  legal  customs 
regarding the immunity of states that have caused 
damage  by  acts  of  aggression,  genocide,  and 
military actions, there are certain difficulties in 
bringing  the  guilty  parties  to  justice  in  the 
lawsuits  of  private  persons  of  another  state 
regarding its compensation.  
The  decision of  the UN International Court  of 
Justice in the case Jurisdictional Immunities of 
the State, Germany v. Italy: Greece Intervening 
(2012). The need to apply judicial immunity to 
Germany  by  Italian  national  courts  when 
considering  cases  based  on  claims  of  victims 
during  the  Second  World  War  has  been 
recognized. 
 
However, Italy and Greece have already shown a 
willingness to waive immunity to the aggressor 
state in disputes concerning damages. After the 
decision of the International Court of Justice of 
the United Nations, Italy refused to comply with 
it. In 2014, the Constitutional Court of Italy noted 
that in this case, the usual international rule of 
immunity  of  foreign  states  entails  an  absolute 
sacrifice of the right to judicial protection, since 
it  denies the jurisdiction of  domestic  courts to 
resolve claims for damages brought by victims of 
crimes against humanity and gross violations of 
human  rights.  Moreover,  in  the  constitutional 
system,  no  overriding  public  interest  can  be 
defined that can justify the sacrifice of the right 
to judicial protection of fundamental rights that 
have been violated as a result of serious crimes. 
The  immunity  of  a  foreign  state  from  the 
jurisdiction  of  an  Italian  judge,  granted  by 
Articles 2 and 24 of the Constitution, protects the 
sovereign  function  of  the  state,  but  does  not 
protect behavior that is not a typical exercise of 
government powers and is qualified as illegal, as 
it violates human rights (Atamanova & Kobets, 
2022). 
 
So,  as  the  analyzed  practice  shows,  state 
immunity  can  actually  become  a  way  of 
protection and the result of impunity, and victims 
are  deprived  of  the  opportunity  to  receive  fair 
compensation  for  the  damage  caused  to  them. 
And  that  is  why  it  is  important  to  draw  the 
attention of society (other states) to the fact that 
the  presence  of  immunity  should  not  mean 
impunity of the state for committing war crimes. 
 
Prospects for the activity of international courts 
 
The  following  should  be  noted  regarding  the 
prospects  for  the  activities  of  international 
judicial bodies. 
A  number  of  experts,  in  particular  the  chief 
prosecutor of the International Criminal Court in 
The Hague, Karim Khan, oppose the creation of 
specialized  tribunals  to  investigate  certain  war 
crimes (in particular, the investigation of Russia's 
crimes in Ukraine), given that the International 
Criminal  Court  can  itself  effectively  consider 
war  crimes.  At  the  same  time,  the  European 
Commission intends to create a special court with 
the support  of the UN  to  avoid  problems  with 
immunity for Putin (Voice of America website, 
2022). 
 
Also, there are some legal challenges to properly 
prosecuting war criminals. 
For example, Ukraine signed the Rome Statute in 
2001  but  has  not  yet  ratified  this  international 
treaty. One of the reasons is the decision of the