Poland calls ‘urgent’ defense meeting after alleged Russian missiles kill 2.

Poland is a member of NATO. While a direct attack on a NATO country could lead to Article 5 of the treaty being triggered, it is unclear if an accidental hit, such as stray rocket fire, would lead to such a decision. Article 5 dictates that if a NATO ally is a victim of an armed attack, all other members of the treaty will consider this an act of violence against the entire alliance and will take actions it deems as necessary to assist the attacked ally.