The concocted news network is awful. The feds don't seek warrants. They issue them. Has a warrant been issued? The grounds given in the story are insufficient.
Easy ... Trumpf is desperate to not be arrested and impeached for colluding with Russia and committing espionage and high-treason ... so bomb a Syrian Airfield and arrest Assange ... and tell the world ... 'See, I'm not a Russian agent and spy'
That is, throw 'em all under the bus after they got you elected.