Alexander Stubb, Finland's new president-elect, faces his first challenge not from Russia, but from Donald Trump's threats to the future of NATO, an alliance Finland recently joined.

Alexander Stubb, the president-elect of Finland, finds his inaugural challenge in the former U.S. President Donald Trump's threats to the future of NATO. Trump's statements put into question the reliability of the U.S. commitment to NATO amid Finland's recent membership in the alliance and concerns about Russia. With Finland sharing NATO's longest border with Russia, Trump's stance potentially affects the nation's security and its role in the trans-Atlantic partnership.