Washington/Tehran, April 1 -- The Kremlin on Monday said Russia and the US were working on ideas for a possible peace settlement in Ukraine and on building bilateral ties despite US President Donald Trump saying that he was "pissed off" with Vladimir Putin.

Trump told NBC News he was "very angry" after the Russian leader criticised the credibility of Ukrainian President Volodymyr Zelensky and the US president suggested he could impose secondary tariffs of 25%-50% on buyers of Russian oil. "We are continuing to work with the American side, first of all, to build our bilateral relations, which were badly damaged during the previous (US) administration," Peskov said.

A call between Trump and Putin, he said, could be set up at short notice if...