NATO talks in Madrid are to focus on terrorism and the impact of the war in Ukraine on other countries on the last day of a leaders' summit on Thursday.
NATO leaders are also holding discussions on the war's impact on global food prices as a result of Russia's blockade of grain exports.
On Wednesday NATO announced it would overhaul deployments in Eastern Europe, with more than 300,000 soldiers to be placed on high alert.
Expanded multinational groups in the alliance's east demonstrate efforts to address increased Russian aggression against the backdrop of the invasion of Ukraine.
The change in policy is a boost for the Baltics, including Estonia who pushed hard for the alliance to change its approach to the region.
"Our concerns have been listened to, and everybody agreed yesterday that the strengthening of the eastern flank is very important," Estonian Prime Minister Kaja Kallas said on her arrival at the talks on Thursday.
Yesterday NATO also addressed China for the first time, saying the country's "coercive policies challenge [NATO's] interests, security, and values."
China is watching the outcome of the war in Ukraine, Latvia President Egils Levits warned on his arrival at the summit on Thursday.
"If Russia will win, it would be a motivation and incentive to China to do something similar in Indo-Pacific region," he said, referring to Taiwan, a self-governing island that Beijing claims as its own territory.