<span style="color: #222222;">Russia's Foreign Ministry has said on Thursday it was unavoidable that Moscow would respond to new U.S. sanctions and that it had called in Washington's Ambassador in Moscow for tough talks.</span><br />'' <span style="color: #222222;">  </span><br />'' <span style="color: #222222;">U.S. President Joe Biden on Thursday authorised his Government to sanction any sector of the Russian economy, including moves that may restrict Russia's ability to issue sovereign debt, to punish Moscow for interfering in the 2020 U.S. election – the allegation that Russia denies.</span>