"Russia's invasion of Ukraine has led to a radical change in NATO's approach to defense, and alliance members will have to increase their military spending in an increasingly volatile world," NATO Secretary-General Jens Stoltenberg was quoted as saying by the Associated Press. press, BTA reported.

"In order to defend ourselves in a more dangerous world, we need to invest more in our defense," Stoltenberg said ahead of the NATO summit in Madrid, which will set the Alliance's path for the coming years.

He said the meeting would outline a plan for NATO's development "in a more dangerous and unpredictable world".

Only nine of NATO's 30 nations meet the Alliance's target of spending 2 percent of gross domestic product on defense.

According to NATO: Bulgaria increases defense spending by more than 7%

At the top of the agenda of the meeting tomorrow and the day after is the strengthening of NATO's defense capabilities against Russia and the provision of support to Ukraine.

"Ukraine is now facing a brutality that we have not seen in Europe since World War II," Stoltenberg said.

He expressed hope that progress would be made on the issue of Finland and Sweden's application for membership in the Pact, which Turkey opposes.

Stoltenberg said yesterday that NATO plans to strengthen its battle groups on its eastern flank and increase the number of its rapid reaction forces almost eightfold, from 40,000 to 300,000.

NATO figures released today show that the eight multinational battle groups, which are expected to be stationed in member states on the alliance's eastern flank, number a total of 9,641 people.

According to the information, the largest NATO battle group is planned in Latvia, consisting of 1887 people, in Lithuania - 1632, in Estonia - 1430, in Romania - 1148, in Poland - 1033, in Bulgaria - 968, in Hungary - 900, in Slovakia - 643.