There's no warning save, perhaps, for Batman's own words. Were Bucky of sounder mind, maybe he would've quipped in reply, would've swallowed his own reckless impulses, but he's had a rough go of it lately, and all he sees now is an excuse to let loose. He's been made impotent by this island, his actions over the past year rendered futile and useless through interference by an unknowable power, but he has not been made idle.

He wants me to talk? Fine. Just gotta get comfortable first.

Darting forward, Bucky's left hand wrapping around Bats' neck, and thanks to the fine folks at S.H.I.E.L.D., he's able to lift the guy just enough to show he can, though he refrains from any greater show of strength. Refrains from throwing him into the wall.

That's better.

"I gave Jason a home," Bucky says, so deliberately, so casually, it belies his anger. "Dragged him out from his cave and put an honest-to-God roof over his head... Yet the second he thinks you might show up, he goes running underground like a wounded animal."

Sucking in a breath, he continues, "I've been cleaning up after your goddamn mess since I first met the kid, and I will not stand for you ruining what he's built here, you throat-cutting son of a bitch." He lets go with a shove. "Stay the %*(? away from him."