Russian officials told the network that they proposed “unprecedented cooperation” with the U.S.’s Operation Warp Speed, the initiative to develop a COVID-19 vaccine.

"There is a general sense of mistrust of Russia on the American side and we believe that technologies — including vaccine, testing and treatments — are not being adopted in US because of that mistrust," a senior Russian official told CNN.

officials told CNN that Russia’s vaccine is not considered to be well-developed, with one American public health official saying, "There's no way in hell the US tries this (Russian vaccine) on monkeys, let alone people.”.

The report comes after Russia announced Tuesday that it had created a COVID-19 vaccine and Russian President Vladimir PutinVladimir Vladimirovich PutinRussia says coronavirus vaccine will be ready for doctors in two weeks Democrats ramp up warnings on Russian election meddling Fauci: 'I seriously doubt' Russia's coronavirus vaccine is safe and effective MORE said his daughter had taken it.

"If our vaccine proves to be one of the most effective, questions will be asked why the US did not explore this option any deeper, why politics got in way of access to a vaccine," one senior Russian official told the network.