Russia taking Crimea threatens to become Russia takes east Ukraine. That in turn threatens to become Russia takes all of Ukraine, landing Russian troops right on Poland’s frontier.
Poland has a terrible history of being subjected to assaults from Russia. It has asked for a major NATO meeting, which will take place Tuesday.
NATO will hold emergency discussions on Ukraine on Tuesday after Poland requested consultations under Article 4 of the alliance’s treaty, NATO said in a statement on Monday.
Under Article 4, any ally can request consultations whenever, in the opinion of any of them, their territorial integrity, political independence or security is threatened.
More detail here, thanks to Google Translate. Poland’s military chief is describing the situation as a “security black hole.”
NATO Article 4 meetings are rare. According to the Chicago Tribune, only Turkey has called for such meetings before.