Overview

• Parliament in Helsinki voted 157-18 for the withdrawal, citing security concerns along its 1,340-kilometer border with Russia.
• The decision aligns Finland with Estonia, Latvia and Lithuania, which exited the treaty earlier this year.
• Finnish military leaders say anti-personnel mines are necessary to defend the country against potential aggression.
• The treaty exit becomes effective six months after Finland submits its formal notification to the United Nations.
• Poland is evaluating a similar departure as NATO allies fortify their eastern frontier.