Biogas plant producing electricity from organic waste is seen on Spreca farm in Kalesija, Bosnia and Herzegovina, January 19, 2023. REUTERS/Dado Ruvic 

Representations of a cryptorurrency are seen in front of Nexo logo in this illustration taken, January 13, 2023. REUTERS/Dado Ruvic/Illustration 

Representations of a cryptorurrency are seen in front of Nexo logo in this illustration taken, January 13, 2023. REUTERS/Dado Ruvic/Illustration 

Representations of a cryptorurrency are seen in front of Nexo logo in this illustration taken, January 13, 2023. REUTERS/Dado Ruvic/Illustration 

Members of Special police march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Members of Special police march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic TPX IMAGES OF THE DAY 

Members of Special police march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

President of Republika Srpska (Serb Republic) Milorad Dodik looks on during a parade to celebrate Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Armed police stand guard during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Members of the 'Night Wolves' Motorcycle Club march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

President of Republika Srpska (Serb Republic) Milorad Dodik speaks during a parade to celebrate Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

President of Republika Srpska (Serb Republic) Milorad Dodik speaks during a parade to celebrate Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

President of Republika Srpska (Serb Republic) Milorad Dodik, and Serb member of Bosnia's tripartite inter-ethnic presidency Zeljka Cvijanovic march during a parade to celebrate Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Armed forces march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Armed forces march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

President of Republika Srpska (Serb Republic) Milorad Dodik speaks during a parade to celebrate Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

President of Republika Srpska (Serb Republic) Milorad Dodik speaks during a parade to celebrate Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Members of Special police march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Armed forces march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Armed forces march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Armored vehicles march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Police march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Police march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Police march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Police march during parade celebrations to mark their autonomous Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

President of Republika Srpska (Serb Republic) Milorad Dodik speaks with Ivica Dacic during the celebration of Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

President of Republika Srpska (Serb Republic) Milorad Dodik attends Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

President of Republika Srpska (Serb Republic) Milorad Dodik attends Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

President of Republika Srpska (Serb Republic) Milorad Dodik attends Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic REFILE-CORRECTING TITLE 

President of Republika Srpska (Serb Republic) Milorad Dodik waves as he attends Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic REFILE-CORRECTING TITLE 

People celebrate Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

People celebrate Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

A girl takes part in celebration of Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

People celebrate Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

Bosnian Serbs celebrate Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

A man holds the flags of Serb Republic as Bosnian Serbs celebrate Serb Republic national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

A view shows the flag of Serb Republic on a building on the day of Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

A view shows the flags of Serb Republic on a building on the day of Serb Republic's national holiday, banned by the constitutional court, in East Sarajevo, Bosnia and Herzegovina, January 9, 2023. REUTERS/Dado Ruvic 

An aerial view shows melting snow on a ski slope, at a ski center in Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

An aerial view shows melting snow on a ski slope, at a ski center in Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

Melting snow and snow machines are seen on a ski slope, at a ski center in Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

Melting snow and snow machines are seen on a ski slope, at a ski center in Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

A view of closed shops in a ski center at Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

An aerial view shows melting snow on a ski slope, at a ski center in Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

Melting snow is seen on a ski slope, at a ski center in Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

Melting snow is seen on a ski slope, at a ski center in Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

An aerial view shows melting snow on a ski slope, near a snow machine, at a ski center in Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

Melting snow is seen on a ski slope, at a ski center in Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

Melting snow is seen on a ski slope, at a ski center in Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

An aerial view shows melting snow on a ski slope, at a ski center in Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

An aerial view shows melting snow on a ski slope, at a ski center in Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

Melted snow is seen on a ski slope at a ski center in Bjelasnica, near Sarajevo, Bosnia and Herzegovina January 5, 2023 REUTERS/Dado Ruvic 

A natural gas pipeline, and the logos of Tokyo Gas and Rockcliff Energy are seen in this illustration taken January 4, 2023. REUTERS/Dado Ruvic/Illustration 

A natural gas pipeline and the Rockcliff Energy logo are seen in this illustration taken January 4, 2023. REUTERS/Dado Ruvic/Illustration 

A natural gas pipeline and the Tokyo gas logo are seen in this illustration taken January 4, 2023. REUTERS/Dado Ruvic/Illustration 

A natural gas pipeline and the Tokyo gas logo are seen in this illustration taken January 4, 2023. REUTERS/Dado Ruvic/Illustration 

A snow making machine is seen on top of Jahorina mountain near Sarajevo, Bosnia and Herzegovina January 4, 2023. REUTERS/Kirsten Donovan 

Ski centre on mountain Jahorina is seen in Sarajevo, Bosnia and Herzegovina January 4, 2023. REUTERS/Kirsten Donovan 

A cable car is seen on mountain Jahorina in Sarajevo, Bosnia and Herzegovina January 4, 2023. REUTERS/Kirsten Donovan 

Ski centre on mountain Jahorina is seen in Sarajevo, Bosnia and Herzegovina January 4, 2023. REUTERS/Kirsten Donovan