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".

Estonia and its allies launched a blistering criticism of Russia for flying fighter jets through its airspace last week, calling Moscow out at an emergency meeting of the UN Security Council on Monday and accusing it of “reckless” and “outrageous” behavior.

Estonia’s prime minister said NATO will be ready to respond if Russian forces repeat a violation into the Baltic nation’s airspace.

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.