Moscow says it'll respond to Kyiv attacks as and when it sees fit

Russia says it will respond to Ukraine's latest attacks as and when its military sees fit, accusing Kyiv of state terrorism and confirming that Russian President Vladimir Putin has told US President Donald Trump that Moscow is obliged to retaliate.

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MOSCOW -

Ukraine used drones to strike Russian heavy bomber planes at airbases in Siberia and the far north on June 1.

Russia also accused Ukraine of blowing up rail bridges in the south of the country, killing seven people.

Kremlin spokesman Dmitry Peskov, at his daily briefing with reporters on June 5, highlighted comments made by Mr. Putin a day earlier about the railway attacks.

"The President described the Kyiv regime as a terrorist regime because it was the regime's leadership that consciously gave the order, the command, the order to blow up a passenger train. This is nothing other than terrorism at the state level. This is an important statement by the President," said Mr. Peskov.

Russia has not yet provided evidence that Ukrainian leaders ordered the rail attacks, and Kyiv has not acknowledged responsibility.