spring something on

He rejected accusations that the United States was spreading panic, saying transparency was intended to deny Russia the opportunity to “spring something on Ukraine or the world.”

“We’re not going to give Russia the opportunity to conduct a surprise here, to spring something on Ukraine or the world,” Sullivan said.

“Fundamentally, our view is we’re not going to give Russia the opportunity to conduct a surprise here, to spring something on Ukraine or the world,” he said.

She was going to spring something on him, he was sure.

Look out sharp, that these lads don't spring something on you, Jake.