National Security Council spokesman John Kirby weighed in on the impact of Russia’s withdrawal from the Black Sea grain deal at a White House news conference on Monday, calling the move “irresponsible and dangerous.”

“Prices went up today,” Kirby said. “Corn, soybean and wheat all shot up today as a result of this decision.

We’re seeing the impact right now.”

He called on Russian President Vladimir Putin to reverse his decision on the grain deal.