Originally Posted by
Tendrin
Yes.
Yes, he dd. Skull was practically begging him to kill him in that issue. It's pretty obvious. There's no direct textual explanation yet from the characters, but the subtext is pretty obvious. Magneto's striking down the Red Skull has made him more powerful by releasing the Red Onslaught.
It's pretty obvious what happened, even if it isn't spelled out.
Mags and some of his fans will argue 'How was he to know?!' and try to defend it, but let's remember that Mags knew Charles was potentially still in there, didn't care, knows that the psionic energies of a being like Xavier isn't necessarily extinguished on death (and didn't care) from previous experience in comics, and knows that Onslaught is a being composed of his and Xavier's darkest sides and the Red Skull is sitting there, taunting him, rather than doing /any of the other things he could do/ while Mags advances on him with a rock in hand.
Red Skull manipulates Magneto into doing exactly what he needed him to do to allow him to become Onslaught. Ahab and Kang are probably at least partially responsible for this, given we don't know exactly all of what Ahab told the Skull. Of course, a guy like Magneto is /never/ going to accept that his indulgence of rage and vengeance, /no matter how understandable those feelings are leads to greater disaster.