As Russian troops prepared and attacked Ukraine’s physical territory, multiple reports indicated that Russia has also been attacking Ukrainian institutions in cyberspace as well. The threat of Russian cyberattacks is calling new attention to a crucial weakness in the United States' electricity supply: the natural gas pipelines that keep many of the power plants running. POLITICO’s Catherine Morehouse explains.    Kelsey Tamborrino is a reporter covering clean energy and is the host of the POLITICO Energy podcast.  Catherine Morehouse is an energy reporter for POLITICO.  Nirmal Mulaikal is a POLITICO audio host-producer.  Carlos Prieto is an audio producer for POLITICO.  Raghu Manavalan is a senior editor for POLITICO audio. Jenny Ament is the executive producer of POLITICO’s audio department. Learn more about your ad choices. Visit megaphone.fm/adchoices