"Trying to undermine Voldemort," Harry ignored the small gasps at the name, "The Ministry doesn’t believe he’s back, so you can’t go all wands blazing otherwise Fudge will probably start making arrests. But you’ve got to be careful about it - cause’ Fudge is terrified of Dumbledore now, scared he wants Fudge’s job. So, he’s watching anyone he thinks is friendly with him," he pointed briefly at Arthur, "so you need new faces - new people with no association with the headmaster," his finger turned to Tonks, "so you know what Fudge is thinking and can keep an eye on him. And you’ve got spies in the Death Eaters too," he tilted his head at the surprisingly silent Snape behind him, "so you know Voldemort’s every move too," Sirius posture was getting less and less casual as he spoke.