<p>The Trump administration on Tuesday moved to tighten financial restrictions on Venezuela, blacklisting a subsidiary of Russian oil firm Rosneft, which US officials have said provides a lifeline to President Nicolas Maduro's government.</p>.<p>The sanctions, announced on the US Department of Treasury's website, target Rosneft Trading. The United States also issued a general license allowing companies until May 20 to wind down their transactions with the company, according to a notice on the department's website.</p>
<p>The Trump administration on Tuesday moved to tighten financial restrictions on Venezuela, blacklisting a subsidiary of Russian oil firm Rosneft, which US officials have said provides a lifeline to President Nicolas Maduro's government.</p>.<p>The sanctions, announced on the US Department of Treasury's website, target Rosneft Trading. The United States also issued a general license allowing companies until May 20 to wind down their transactions with the company, according to a notice on the department's website.</p>