Russian President Vladimir Putin has revealed his real intentions in Ukraine by bombing civilian energy infrastructure after telling Donald Trump that Moscow would stop such attacks, said Finnish President Alexander Stubb, writes POLITICO.

The only real solution to deter Moscow, Stubb said, was to "militarize Ukraine to its teeth".

The Finnish president was speaking after a meeting with Ukrainian President Volodymyr Zelensky in Helsinki, one day after Trump held a two-hour phone conversation with Putin. Despite agreeing to a pause on attacking energy infrastructure, Russia unleashed a barrage of drone and missile attacks on Ukraine after the call, including against civilian and energy targets.

"As someone who`s mediated the ceasefire in Georgia in 2008, I can say this is a fairly typical Putin tactic," Stubb said in an interview. "We have an aggressor who says he wants a ceasefire and peace, but refuses to commit.

"And I think yesterday`s phone conversation between Trump and Putin was a step in the right direction, but we are now seeing the true face of Putin", he added.