You can walk and chew gum at the same time as the expression goes. I've written to representatives specifically about cutting off arms and intelligence to the Saudi effort in Yemen, and as I said I'm against prosecuting Assange.
However bringing up Afghanistan, Iraq, Syria (where Russia is inflaming the situation too), and Yemen is whataboutism. The discussion was about Russia's shitty record on press freedom.
But if we are trying to dig into the current conflict, the US hasn't invaded anyone for territorial expansion in a long fucking time. Russia has recently invaded Ukraine three times, Chechnya twice, and Georgia.