and the crimean peninsula came under fire from several naval drones. you can see the partial collapse of the bridge as it is being surveyed. the video released by the russian investigative committee shows soldiers assessing further damage and collecting evidence from the attack. ukrainian defense ministry has declined to comment but ukraine media was declaring it was a special operation involving the security service of ukraine and the ukrainian navy. joining me now, nbc news foreign correspondent josh letterman. tell us more. reporter: we are following these two major stories at the same time. on the one hand, this attack on the crimea bridge which was recently attacked back in october. and on the same day, russia announcing it is pulling out of that crucial grain deal that has allowed critical exports like wheat, corn oil to get to developing nations in north africa and the middle east since