Russia one month ago on NATO expansion:
“Finland's accession to NATO will cause serious damage to bilateral Russian-Finnish relations and the maintaining of stability and security in the Northern European region,” the Russian Foreign Ministry said earlier this month. “Russia will be forced to take retaliatory steps, both of a military-technical and other nature, in order to neutralize the threats to its national security that arise from this.”
Russia now:
“As for the expansion, including the accession of two prospective new members, Finland and Sweden, I would like to inform you, colleagues, that Russia has no problems with these states,” Putin said Monday at a summit of the Russian-led military alliance, the Collective Security Treaty Organization (CSTO). “No problems at all!”
The reason for the 180? Putin had to save face with the people he overlords. And it's not like he can do anything about it even if he wanted to. Clowns.