NATO’s 32 ambassadors meet most weeks in a format known as the North Atlantic Council at the military alliance’s headquarters in Brussels. Estonia has requested consultations under Article 4 of NATO's founding treaty.

U.S. allies called an emergency meeting of the U.N. Security Council after a series of incidents raised alarm about growing Russian threats to Europe.

TALLINN, Estonia —NATO will issue a joint declaration soon on continuing Russian air incursions, Estonian Defense Minister Hanno Pevkur said Monday, and Estonia hopes it will include expanded air patrols and other defense measures under the recently announced Eastern Sentry coordinated air defense campaign.

Estonia has requested Article 4 consultations after three Russian MiG-31 fighter jets entered their airspace on Friday morning.