WASHINGTON, Oct 20 (Reuters) - The United States on Friday released a U.S. intelligence assessment sent to more than 100 countries that found Moscow is using spies, social media and Russian state-run media to erode public faith in the integrity of democratic elections worldwide.

"This is a global phenomenon," said the assessment. "Our information indicates that senior Russian government officials, including the Kremlin, see value in this type of influence operation and perceive it to be effective."

A senior State Department official, briefing reporters on condition of anonymity, said that Russia was encouraged to intensify its election influence operations by its success in amplifying disinformation about the 2020 U.S. election and the COVID-19 pandemic.