France, Oct. 13 -- EU foreign policy chief Kaja Kallas struck a cautious note on Monday, saying Brussels wanted to see clear evidence that Moscow intended to respect the proposed halt to attacks on energy infrastructure announced by US President Donald Trump.

"We welcome the energy ceasefire when it holds," Kallas told reporters ahead of a meeting of EU foreign ministers. "We haven't yet seen that also Russia will stick to it."

Those doubts deepened through the day as Ukraine said Russia had continued to strike energy sites, while the Kremlin stopped short of confirming that any ceasefire had been agreed.

"It is increasingly evident that Russia is unwilling to accept an energy ceasefire proposed by the United States," Ukrainian Preside...