Ukraine adviser Podolyak thanks UK's Johnson for supporting Ukraine

Ukraine-Russia talks in Istanbul

KYIV (Reuters) - An adviser to Ukraine's President Volodymyr Zelenskiy on Thursday thanked outgoing British Prime Minister Boris Johnson for always being at the forefront of supporting Ukraine.

Mykhailo Podolyak added in a video accompanying a Twitter post that Johnson, who said on Thursday he would quit as prime minister, was "a person who began to call a spade a spade from the beginning" of Russia's invasion of Ukraine.

(Reporting by Max Hunder; Writing by Alexander Winning; Editing by Toby Chopra)