Vladimir Putin has said Russia has no issue with Finland and Sweden, but warned Moscow would react to the expansion of military infrastructure on their territories as both countries move closer to joining NATO.
Speaking in Moscow at a summit of the Russian-led Collective Security Treaty Organisation (CSTO), he said Russia must look closely at what he described as the US-led military alliance’s plans to increase its global influence.
Finland and Sweden have confirmed they will apply to join NATO despite warnings from Russia that it would be a “mistake” to do so.
Finland shares an 810-mile (1,300km) land border with Russia and Sweden a maritime border.
Both countries have for decades considered that joining NATO would represent an unnecessary provocation of Moscow.
However, the historic shift in policy follows Russia’s invasion of Ukraine.
Mr Putin said the enlargement of NATO was being used by the United States in an “aggressive” way to aggravate an already difficult global security situation.
The Russian leader said there was no direct threat from NATO expansion which included those countries, “but the expansion of military infrastructure into this territory would certainly provoke our response”.
“What that (response) will be – we will see what threats are created for us,” said Mr Putin, adding: “Problems are being created for no reason at all. We shall react accordingly.”
Meanwhile, Belarusian President Alexander Lukashenko urged other members of CSTO to stand united, and accused the West of hoping to prolong the conflict in Ukraine to try to weaken Russia as much as possible.
Also addressing the summit in Moscow, he said “hellish sanctions” against his country and Russia could have been avoided if the group had spoken with one voice.
“Without a united front, the collective West will build up pressure on the post-Soviet space,” Mr Lukashenko said in televised opening remarks, addressing Mr Putin and the leaders of Armenia, Kazakhstan, Kyrgyzstan and Tajikistan.
It comes as Ukraine claimed that its troops defending Kharkiv have reached the border with Russia after pushing the invading forces back.
It follows the release of a video by Ukraine’s ministry of defence purporting to show Ukrainian troops arriving at the border dividing the two countries.
It said the 227th Battalion of the 127th Brigade of Ukraine’s Territorial Defence Forces had reached the border.
However, it is unclear how many had reached the border and exactly where.
The northeastern Ukrainian city is situated about 30 miles (50km) from the border with Russia and has endured weeks of heavy Russian bombardments.