Ukrainian President Volodymyr Zelensky calls on the US to strengthen sanctions on Russia, saying Moscow is "violating" agreements made in separate talks with Washington officials in Saudi Arabia on halting strikes on energy sites and at sea. "I believe we have come to the point of increasing the sanctions impact, because I believe that the Russians are violating what they have promised America," Zelensky says at a press conference in Kyiv. "And we very much hope that President Trump has all these appropriate tools to increase the sanctions pressure on the Russian side", he adds. SOUNDBITES