"A telephone conversation between Donald Trump and Vladimir Putin took place half an hour ago at the initiative of the US president," Ushakov told reporters.
Putin warmly thanked Trump for his hospitality during the meeting in Alaska, Ushakov noted.
"The US president, in turn, informed [Putin] about the negotiations that had just ended in the White House with Volodymyr Zelensky and the leaders of a number of European countries," Ushakov said, adding that the conversation between the US and Russian presidents was "frank and very constructive" and lasted about 40 minutes.