By Olena Harmash KYIV, Feb 7 (Reuters) - Russia launched a massive air attack on Ukrainian energy facilities overnight on Saturday, targeting electricity generation and distribution, Kyiv said. President Volodymyr Zelenskiy said the overnight attack involved more than 400 drones and some 40 missiles of various types,

Moscow has been waging an intense campaign against Ukrainian energy targets.

Russia's FSB intelligence service has accused Ukraine of planning an attack on a top Kremlin general. A suspect has been detained in Dubai and taken to Moscow. Catch up on all the latest below.

Russia carried out a mass attack on Ukraine's energy infrastructure on Feb. 7, triggering emergency power outages across most regions, Energy Minister Denys Shmyhal said.

While businesses were prepared for electricity cuts due to Russian missile and drone attacks on Ukraine’s energy infrastructure, no one expected such a brutal winter.

The Federal Security Service (FSB) said a Russian citizen, Lyubomir Korba, was detained in Dubai on suspicion of carrying out the shooting. In a statement on its website, FSB said it had also identified two “accomplices,” one of whom was detained in Moscow and another who “left for Ukraine.”

Ukraine's President Volodymyr Zelenskyy has stated that Russia's energy sector is a legitimate target, but Kyiv is not yet able to retaliate to Russian attacks with equivalent force.

Ukrainian President Volodymyr Zelensky has said that the United States wants a peace settlement between Ukraine and Russia by early summer, despite repeated rounds of talks failing to reach a breakthrough over the issues of territory and security guarantees.

The Russians attacked Ukraine with 101 UAVs on the night of 7-8 February, about 70 of which were Shahed attack drones. Ukraine's Air Force reported that 69 of the drones were shot down or jammed. Source: Ukraine's Air Force Details: Overall,

U.S., Russian and Ukrainian negotiators are meeting in the United Arab Emirates, but Russia continues to pummel Ukraine and has not softened demands that Kyiv calls unacceptable.

Ukrainian nuclear power plants are producing less electricity following heavy Russian missile strikes on substations and high-voltage lines, President Volodymyr Zelensky said on Saturday. "One