NATO allies have held formal consultations at Estonia's request. The meeting followed Estonia's report that three Russian fighter jets entered its airspace last week without authorization.

NATO warned Russia on Tuesday that it would use "all necessary military and non-military tools" to defend itself as it condemned Moscow for violating Estonian airspace in "a pattern of increasingly irresponsible behaviour".

NPR talks with Margus Tsahkna, the foreign minister of Estonia, about Russia's alleged incursion into Estonian airspace and NATO's response.

Russia denies jets entered Estonian airspace in the same month as its drones violated the airspace of two other Nato members.

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.