No Plan?

"Let's start making plans for him," Tony Stark said solemnly. The Avengers nodded and all looked toward Stephen Strange. The conference room fell silent for a long while. Stephen Strange did not offer any specific plan. "What, you called us here without already bringing a plan to deal with Thanos?" Tony Stark demanded. The Avengers had always either followed Nick Fury's plans or followed the plans He-El laid out, with He-El directing them.