Republicans were, though, more likely to believe Russian disinformation claims than their Democratic counterparts, with 57.6% falling for at least one Russian disinformation claim, compared with just 17.9% of Democrats and 29.5% of people who didn’t identify with one particular party.
I would definitely count the US as part of the misinformation sources.
TBH, I could list 5 lies the US and Russia is spreading online, not sure what China is trying to make us believe.