Belgium is the country you are looking for. The Netherlands is bordered by Belgium, Germany and the North Sea.
Amsterdam, Netherlands Andorra la Vella, Andorra Ankara, Turkey* Athens, Greece Astana, Kazakhstan* *= transcontinental country.
Pakistan
Utrecht in the Netherlands Ulm in Germany
Mexico
· Rome, Italy · Rotterdam, Netherlands
Rwanda
No country that borders Libya starts with the letter B.
Kenya
Germany
Oslo
Denmark.