A view of a British Warrior infantry fighting vehicle during Northern Forest land force exercise in Rovajarvi, Finland May 30, 2023. REUTERS/Janis Laizans 

A view of a Leopard 2 main battle tank during the Northern Forest land force exercise in Rovajarvi, Finland May 30, 2023. REUTERS/Janis Laizans 

A view of a CV90 infantry fighting vehicle during the Northern Forest land force exercise in Rovajarvi, Finland May 30, 2023. REUTERS/Janis Laizans 

Finnish soldiers participate in the Northern Forest land force exercise in Rovajarvi, Finland May 30, 2023. REUTERS/Janis Laizans 

Finnish soldiers walk during the Northern Forest land force exercise in Rovajarvi, Finland May 30, 2023. REUTERS/Janis Laizans 

A view of a U.S. Army Multiple Launch Rocket System (MLRS) during the Northern Forest land force exercise in Rovajarvi, Finland May 30, 2023. REUTERS/Janis Laizans 

A U.S. soldier looks on as a Finnish soldier trains with a Carl Gustaf recoilless rifle during the Northern Forest land force exercise in Rovajarvi, Finland May 30, 2023. REUTERS/Janis Laizans 

A U.S. soldier instructs a Finnish soldier on the Carl Gustaf recoilless rifle during the Northern Forest land force exercise in Rovajarvi, Finland May 30, 2023. REUTERS/Janis Laizans 

Troops operate a 155K gun during the Northern Forest land force exercise in Rovajarvi, Finland May 30, 2023. REUTERS/Janis Laizans 

Norwegian soldiers stand together during the Northern Forest land force exercise in Rovajarvi, Finland May 30, 2023. REUTERS/Janis Laizans 

Denmark?s acting defence minister Troels Lund Poulsen attends a press conference in Copenhagen, Denmark , May 30, 2023. REUTERS/Tom Little 

Denmark?s acting defence minister Troels Lund Poulsen attends a press conference in Copenhagen, Denmark , May 30, 2023. REUTERS/Tom Little 

Denmark?s acting defence minister Troels Lund Poulsen attends a press conference in Copenhagen, Denmark , May 30, 2023. REUTERS/Tom Little 

Denmark?s acting defence minister Troels Lund Poulsen attends a press conference in Copenhagen, Denmark , May 30, 2023. REUTERS/Tom Little 

U.S. aircraft carrier USS Gerald R. Ford sails on the Oslo fjord towards Oslo, Norway May 24, 2023. REUTERS/Victoria Klesty 

U.S. aircraft carrier USS Gerald R. Ford sails on the Oslo fjord towards Oslo, Norway May 24, 2023. REUTERS/Victoria Klesty 

U.S. aircraft carrier USS Gerald R. Ford sails on the Oslo fjord towards Oslo, Norway May 24, 2023. REUTERS/Victoria Klesty 

U.S. aircraft carrier USS Gerald R. Ford sails on the Oslo fjord towards Oslo, Norway May 24, 2023. REUTERS/Victoria Klesty 

Danish astronaut Andreas Mogensen and Crown Prince Frederik pose at the kick-off event for the Huginn space mission, in Copenhagen, Denmark May 22, 2023. REUTERS/Tom Little 

Danish astronaut Andreas Mogensen and Crown Prince Frederik pose with dignitaries and other people involved at the kick-off event for the Huginn space mission, in Copenhagen, Denmark May 22, 2023. REUTERS/Tom Little 

Danish astronaut Andreas Mogensen and Crown Prince Frederik pose with dignitaries and other people involved in the mission, at the kick-off event for the Huginn space mission, in Copenhagen, Denmark May 22, 2023. REUTERS/Tom Little 

Danish astronaut Andreas Mogensen and Crown Prince Frederik attend the kick-off event for the Huginn space mission, in Copenhagen, Denmark May 22, 2023. REUTERS/Tom Little 

Danish astronaut Andreas Mogensen speaks at a kick-off event for the Huginn space mission in Copenhagen, Denmark, May 22, 2023. REUTERS/Tom Little 

Danish astronaut Andreas Mogensen speaks at a kick-off event for the Huginn space mission in Copenhagen, Denmark, on May 22, 2023. REUTERS/Tom Little 

Czech President Petr Pavel talks to journalists during a press conference at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

Czech President Petr Pavel talks to journalists during a press conference at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

Czech President Petr Pavel talks to journalists during a news conference at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

Chairman of the Copenhagen Democracy Summit and former NATO Secretary-General, Anders Fogh Rasmussen, talks to journalists during a news conference at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

Chairman of the Copenhagen Democracy Summit and former NATO Secretary-General, Anders Fogh Rasmussen, talks to journalists during a news conference at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

Exiled Belarus opposition leader Sviatlana Tsikhanouskaya speaks at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

Estonian Prime Minister Kaja Kallas delivers a speech at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

NATO Secretary-General Jens Stoltenberg speaks via video link to the Chairman of the Copenhagen Democracy Summit and former NATO Secretary-General, Anders Fogh Rasmussen, at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

Ukrainian President Volodymyr Zelenskiy speaks on a screen, at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

Ukrainian President Volodymyr Zelenskiy speaks on a screen, at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

Belarus' exiled opposition leader Sviatlana Tsikhanouskaya speaks at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

NATO Secretary-General Jens Stoltenberg speaks via video link to the Chairman of the Copenhagen Democracy Summit and former NATO Secretary-General, Anders Fogh Rasmussen, at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

Ukrainian President Volodymyr Zelenskiy speaks on a screen, at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

Belarus' exiled opposition leader Sviatlana Tsikhanouskaya speaks at the Copenhagen Democracy Summit, in Copenhagen, Denmark May 15, 2023. REUTERS/Tom Little 

Equinor?s executive in charge of security, safety and sustainability Jannicke Nilsson poses for a picture at Equinor?s office in Bergen, Norway May 9, 2023. REUTERS/Nerijus Adomaitis. 

Equinor?s executive in charge of security, safety and sustainability Jannicke Nilsson poses for a picture at Equinor?s office in Bergen, Norway May 9, 2023. REUTERS/Nerijus Adomaitis. 

Equinor?s executive in charge of security, safety and sustainability Jannicke Nilsson poses for a picture at Equinor?s office in Bergen, Norway May 9, 2023. REUTERS/Nerijus Adomaitis. 

Bolt CEO Markus Villig attends an interview at the company's offices in Stockholm, Sweden, May 8, 2023. REUTERS/Supantha Mukherjee 

Bolt CEO Markus Villig attends an interview at the company's offices in Stockholm, Sweden, May 8, 2023. REUTERS/Supantha Mukherjee 

A Member of the Danish Slackline Association walks a 160-metre-long line suspended 15 metres over the harbour in Copenhagen, Denmark, May 4, 2023. REUTERS/Tom Little 

A Member of the Danish Slackline Association walks a 160-metre-long line suspended 15 metres over the harbour in Copenhagen, Denmark, May 4, 2023. REUTERS/Tom Little TPX IMAGES OF THE DAY 

A Member of the Danish Slackline Association walks a 160-metre-long line suspended 15 metres over the harbour in Copenhagen, Denmark, May 4, 2023. REUTERS/Tom Little 

A Member of the Danish Slackline Association walks a 160-metre-long line suspended 15 metres over the harbour in Copenhagen, Denmark, May 4, 2023. REUTERS/Tom Little 

A Member of the Danish Slackline Association walks a 160-metre-long line suspended 15 metres over the harbour in Copenhagen, Denmark, May 4, 2023. REUTERS/Tom Little 

A Member of the Danish Slackline Association walks a 160-metre-long line suspended 15 metres over the harbour in Copenhagen, Denmark, May 4, 2023. REUTERS/Tom Little 

Danish Prime Minister Mette Frederiksen, Ukraine President Volodymyr Zelenskiy, Finnish President Sauli Niinisto, Icelandic Prime Minister Katrin Jakobsdottir and Norwegian Prime Minister Jonas Gahr Store take part in a press conference in Helsinki, Finland May 3, 2023. Essi Lehto/REUTERS 

Ukraine President Volodymyr Zelenskiy takes part in a press conference with Finnish President Sauli Niinisto (not pictured) Danish Prime Minister Mette Frederiksen (not pictured), Norwegian Prime Minister Jonas Gahr Store (not pictured), Swedish Prime Minister Ulf Kristersson (not pictured) and Icelandic Prime Minister Katrin Jakobsdottir (not pictured), in Helsinki, Finland May 3, 2023. Essi Lehto/REUTERS REFILE - CORRECTING FIRST NAME OF DANISH PRIME MINISTER 

Ukraine President Volodymyr Zelenskiy takes part in a press conference with Finnish President Sauli Niinisto (not pictured) Danish Prime Minister Mette Frederiksen (not pictured), Norwegian Prime Minister Jonas Gahr Store (not pictured), Swedish Prime Minister Ulf Kristersson (not pictured) and Icelandic Prime Minister Katrin Jakobsdottir (not pictured), in Helsinki, Finland May 3, 2023. Essi Lehto/REUTERS REFILE - CORRECTING FIRST NAME OF DANISH PRIME MINISTER 

Swedish Prime Minister Ulf Kristersson, Danish Prime Minister Mette Frederiksen, Ukraine President Volodymyr Zelenskiy, Finnish President Sauli Niinisto, Icelandic Prime Minister Katrin Jakobsdottir and Norwegian Prime Minister Jonas Gahr Store take part in a press conference in Helsinki, Finland May 3, 2023. Essi Lehto/REUTERS REFILE - CORRECTING FIRST NAME OF DANISH PRIME MINISTER 

Ukraine's President Volodymyr Zelenskiy speaks during a press conference at the Presidential Palace in Helsinki, Finland May 3, 2023. REUTERS/Janis Laizans 

Ukraine President Volodymyr Zelenskiy smiles during a press conference with Finnish President Sauli Niinisto (not pictured) Danish Prime Minister Mette Frederiksen (not pictured), Norwegian Prime Minister Jonas Gahr Store (not pictured), Swedish Prime Minister Ulf Kristersson (not pictured) and Icelandic Prime Minister Katrin Jakobsdottir (not pictured), in Helsinki, Finland May 3, 2023. Essi Lehto/REUTERS REFILE - CORRECTING FIRST NAME OF DANISH PRIME MINISTER 

Denmark's Prime Minister Mette Frederiksen attends a press conference at the Presidential Palace in Helsinki, Finland May 3, 2023. REUTERS/Janis Laizans 

Sweden's Prime Minister Ulf Kristersson speaks during a press conference at the Presidential Palace in Helsinki, Finland May 3, 2023. REUTERS/Janis Laizans 

Ukraine's President Volodymyr Zelenskiy and Denmark's Prime Minister Mette Frederiksen attend a press conference at the Presidential Palace in Helsinki, Finland May 3, 2023. REUTERS/Janis Laizans 

Ukraine's President Volodymyr Zelenskiy speaks during a press conference at the Presidential Palace in Helsinki, Finland May 3, 2023. REUTERS/Janis Laizans 

Iceland's Prime Minister Katrin Jakobsdottir speaks during a press conference at the Presidential Palace in Helsinki, Finland May 3, 2023. REUTERS/Janis Laizans