The intense state scrutiny of private oil firm TNK-BP, now facing an environmental review, echoes Putin-era takeovers. The president-elect is reputedly more liberal.
A deal on missile defense could be part of a 'strategic framework' the presidents plan to sign Sunday, legacies in mind.
Opposition to Ukraine and Georgia's US-backed membership bids, led by Germany, is widely seen as an effort to preserve Europe's growing energy ties with Moscow.
His quest for more forces in Afghanistan, headway on continental missile defense may gain ground in Bucharest.
Ahead of a major summit April 2-4, Germany is leading the opposition against their accession.
Charges against two men, one of whom worked for oil giant and joint venture TNK-BP, may be part of an effort to increase Russia's control over oil resources.
High-level talks on contentious issues such as missile defense had a markedly different tone from past rhetoric.
The investment push, fueled by a new sovereign wealth fund and eager Russian businessmen, has raised concerns of Moscow meddling abroad.