MOSCOW — A memo drafted in the weeks leading up to the collapse of the Ukrainian government last year recommended that Russia take advantage of the chaos next door to annex Crimea and a large portion of southeastern Ukraine, a Russian newspaper reported on Wednesday, printing what it said was a document that had been presented to the presidential administration.

Russia has long contended that it acted spontaneously to reclaim Crimea, mainly to protect Russian speakers who it said were threatened, and to stave off what it suspected was an attempt by NATO to colonize the Black Sea region.

The report in Novaya Gazeta, one of the few often-critical voices still published in Russia, said that before the Ukrainian government collapsed on Feb. 21, 2014, the memo had already advised the Kremlin to adopt the policy it has since largely pursued in Ukraine.

The memo appears to have been drafted under the auspices of a conservative oligarch, Konstantin V. Malofeev, the report said. The memo laid out what it called the inevitable disintegration of Ukraine and suggested a series of logistical steps through which Russia could exploit the situation for its own good — steps not far from what actually occurred, though Russia has not annexed any territory in eastern Ukraine.