Slovakian Prime Minister Eduard Heger listens during a news conference in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Slovakian Prime Minister Eduard Heger listens during a news conference in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Slovakian Prime Minister Eduard Heger listens during a news conference in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Slovakian Prime Minister Eduard Heger listens during a news conference in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Slovakian Prime Minister Eduard Heger listens during a news conference in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Slovakian Prime Minister Eduard Heger listens during a news conference in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Prime Minister Kaja Kallas and Slovakian Prime Minister Eduard Heger attend a news conference in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Slovakian Prime Minister Eduard Heger listens during a news conference in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Prime Minister Kaja Kallas looks on as Slovakian Prime Minister Eduard Heger signs guest book in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Slovakian Prime Minister Eduard Heger listens to Estonian Prime Minister Kaja Kallas in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Prime Minister Kaja Kallas and Slovakian Prime Minister Eduard Heger pose for media in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Prime Minister Kaja Kallas shakes hands with Slovakian Prime Minister Eduard Heger in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Prime Minister Kaja Kallas shakes hands with Slovakian Prime Minister Eduard Heger in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Slovakian Prime Minister Eduard Heger listens to Estonian Prime Minister Kaja Kallas in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Slovakian Prime Minister Eduard Heger listens to Estonian Prime Minister Kaja Kallas in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Slovakian Prime Minister Eduard Heger listens to Estonian Prime Minister Kaja Kallas in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Slovakian Prime Minister Eduard Heger presents flowers to Estonian Prime Minister Kaja Kallas in Tallinn, Estonia November 11, 2022. REUTERS/Ints Kalnins 

Members of Austrian special unit Cobra and their Slovakian counterparts wait during an air marshal emergency exercise at Vienna International airport in Schwechat, Austria, October 13, 2022. REUTERS/Leonhard Foeger 

A Slovakian army pilot waves from a Russian-made MiG-29 fighter jet fly at the Malacky Air Base, near Malacky, Slovakia, August 27, 2022. REUTERS/David W Cerny 

Slovakian Defence Minister Jaroslav Nad speaks at a news conference after signing air policing agreement with his Czech and Polish counterparts Jana Cernochova and Mariusz Blaszczak at the Malacky Air Base, near Malacky, Slovakia, August 27, 2022. REUTERS/David W Cerny 

Polish Defence Minister Mariusz Blaszczak and his Czech and Slovakian counterparts Jaroslav Nad and Jana Cernochova attend a news conference after signing air policing agreement at the Malacky Air Base, near Malacky, Slovakia, August 27, 2022. REUTERS/David W Cerny 

Slovakian Prime Minister Eduard Heger arrives for the European Union leaders' summit in Brussels, Belgium June 23, 2022. REUTERS/Yves Herman 

Slovakian Prime Minister Eduard Heger arrives for the European Union leaders' summit in Brussels, Belgium June 23, 2022. REUTERS/Yves Herman 

Slovakian troops attend a celebration ceremony of the 5th anniversary of the Canadian-led NATO enhanced Forward Presence battlegroup in Adazi, Latvia June 15, 2022. REUTERS/Ints Kalnins 

Slovakian troops attend a celebration ceremony of the 5th anniversary of the Canadian-led NATO enhanced Forward Presence battlegroup in Adazi, Latvia June 15, 2022. REUTERS/Ints Kalnins 

Cars wait at an OMV petrol station near the Slovakian border in Esztergom, Hungary, June 13, 2022. Picture taken June 13, 2022. REUTERS/Bernadett Szabo 

A driver fills his car at an OMV petrol station near the Slovakian border in Esztergom, Hungary, June 13, 2022. Picture taken June 13, 2022. REUTERS/Bernadett Szabo 

A driver fills his car at an OMV petrol station near the Slovakian border in Esztergom, Hungary, June 13, 2022. Picture taken June 13, 2022. REUTERS/Bernadett Szabo 

Cars wait at an OMV petrol station near the Slovakian border in Esztergom, Hungary, June 13, 2022. Picture taken June 13, 2022. REUTERS/Bernadett Szabo 

Slovakian Prime Minister Eduard Heger speaks during a news conference with German Chancellor Olaf Scholz at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

Slovakian Prime Minister Eduard Heger and German Chancellor Olaf Scholz attend a news conference at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

Slovakian Prime Minister Eduard Heger and German Chancellor Olaf Scholz leave at the end of their news conference at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

Slovakian Prime Minister Eduard Heger shakes hands with German Chancellor Olaf Scholz at the end of their news conference at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

German Chancellor Olaf Scholz speaks during a news conference with Slovakian Prime Minister Eduard Heger at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

Slovakian Prime Minister Eduard Heger speaks during a news conference with German Chancellor Olaf Scholz at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

Slovakian Prime Minister Eduard Heger attends a news conference with German Chancellor Olaf Scholz at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

Slovakian Prime Minister Eduard Heger speaks during a news conference with German Chancellor Olaf Scholz at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

German Chancellor Olaf Scholz speaks during a news conference with Slovakian Prime Minister Eduard Heger at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

Slovakian Prime Minister Eduard Heger speaks during a news conference with German Chancellor Olaf Scholz at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

German Chancellor Olaf Scholz speaks during a news conference with Slovakian Prime Minister Eduard Heger at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

Slovakian Prime Minister Eduard Heger speaks during a news conference with German Chancellor Olaf Scholz at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

German Chancellor Olaf Scholz and Slovakian Prime Minister Eduard Heger arrive for a news conference at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

German Chancellor Olaf Scholz and Slovakian Prime Minister Eduard Heger attend a news conference at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

German Chancellor Olaf Scholz welcomes Slovakian Prime Minister Eduard Heger during a military honour ceremony in the courtyard of the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

German Chancellor Olaf Scholz welcomes Slovakian Prime Minister Eduard Heger during a military honour ceremony in the courtyard of the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

A soldier of the honour guard carries the battalion emblem during a military honour ceremony in the courtyard of the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

German Chancellor Olaf Scholz welcomes Slovakian Prime Minister Eduard Heger during a military honour ceremony in the courtyard of the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

German Chancellor Olaf Scholz welcomes Slovakian Prime Minister Eduard Heger at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

German Chancellor Olaf Scholz welcomes Slovakian Prime Minister Eduard Heger during a military honour ceremony in the courtyard of the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

German Chancellor Olaf Scholz attends a welcoming ceremony for Slovakian Prime Minister Eduard Heger in the courtyard of the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

German Chancellor Olaf Scholz welcomes Slovakian Prime Minister Eduard Heger at the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

German Chancellor Olaf Scholz reviews the honour guard during a military honour ceremony to welcome Slovakian Prime Minister Eduard Heger in the courtyard of the Chancellery, in Berlin, Germany, June 13, 2022. REUTERS/Michele Tantussi 

Slovakian Prime Minister Eduard Heger takes part at the panel discussion hosted by Borge Brende, President of the World Economic Forum 2022 (WEF) in the Alpine resort of Davos, Switzerland May 25, 2022. REUTERS/Arnd Wiegmann 

Dutch Prime Minister Mark Rutte, President of the European Parliament Roberta Metsola, Ireland's Prime Minister Micheal Martin, President of the European Central Bank Christine Lagarde, Slovakian Prime Minister Eduard Heger take part at the panel discussion hosted by Borge Brende, President of the World Economic Forum 2022 (WEF) in the Alpine resort of Davos, Switzerland May 25, 2022. REUTERS/Arnd Wiegmann 

Dutch Prime Minister Mark Rutte, President of the European Parliament Roberta Metsola, Ireland's Prime Minister Micheal Martin, President of the European Central Bank Christine Lagarde, Slovakian Prime Minister Eduard Heger take part at the panel discussion hosted by Borge Brende, President of the World Economic Forum 2022 (WEF) in the Alpine resort of Davos, Switzerland May 25, 2022. REUTERS/Arnd Wiegmann 

A German patriot launcher is pictured beside a Slovakian MIG29 at Sliac air base in Slovakia, May 6, 2022, before the visit of German Defence Minister Christine Lambrecht. REUTERS/Sabine Siebold 

A pin with the Ukrainian and Slovakian flags is seen on Slovakian Prime Minister Eduard Heger's lapel as he arrives for European Union leaders' summit, amid Russia's invasion of Ukraine, in Brussels, Belgium, March 25, 2022. REUTERS/Wolfgang Rattay 

Slovakian chef Peter Duransky cooks with commis, Mark Janak during the Bocuse d'Or gastronomic contest in Budapest, Hungary, March 23, 2022. REUTERS/Bernadett Szabo 

Slovakian Foreign Minister Ivan Korcok speaks to the media on the day of a Foreign Affairs Council with Foreign Affairs and Defence Ministers, amid Russia's invasion of Ukraine, in Brussels, Belgium March 21, 2022. REUTERS/Johanna Geron 

Slovakian Foreign Minister Ivan Korcok speaks to the media on the day of a Foreign Affairs Council with Foreign Affairs and Defence Ministers, amid Russia's invasion of Ukraine, in Brussels, Belgium March 21, 2022. REUTERS/Johanna Geron