US hits top Russian oil companies Rosneft and Lukoil
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President Donald Trump imposed sanctions on Russia's largest oil companies Rosneft and Lukoil while canceling his planned summit with Russian President Vladimir Putin.
While it is not clear whether Washington will actually carry out any of those moves in the immediate term, it shows there is a well-developed toolkit within the administration to up the ante further after Trump imposed sanctions on Russia on Wednesday for the first time since returning to office in January.