Asian markets were little changed Tuesday after Wall Street treaded water and US President Donald Trump held what he called "very good" talks with Ukrainian and European leaders on ending the three-year war.

Hopes for a breakthrough rose after Trump said he spoke by phone with Russian counterpart Vladimir Putin -- whom he met in Alaska last week -- after hosting the Europeans and Ukrainian President Volodymyr Zelensky at the White House.

"At the conclusion of the meetings, I called President Putin, and began the arrangements for a meeting, at a location to be determined, between President Putin and President Zelensky," Trump said.

Oil prices, which have been volatile for several days -- Russia is a major crude producer -- fell back after gains on Monday.

Tokyo, Sydney and Seoul were do

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