FILE - Cargo ship Oakland crosses the Bosphorus strait towards the Marmara sea after departing from Russia's Novorossiysk port, in Istanbul, Tuesday, March 1, 2022. Turkey, which is trying to balance its support for Ukraine with its fragile economic ties to Russia, said Monday it is implementing an international convention that allows the country to shut down the straits at the entrance of the Black Sea to warships, to avoid an escalation of the conflict. (AP Photo/Francisco Seco, File)
FILE - Harbor cranes are seen at the trade port in Mariupol, Ukraine, Wednesday, Feb. 23, 2022. Ukranian and Russian ports in the Black Sea are major hubs for wheat and corn, but traffic in and out has ground to a halt, effectively shutting down the world’s second-largest grain exporting region. (AP Photo/Sergei Grits, File)
MIAMI — Sanctions on Russia are starting to wreak havoc on global trade, with potentially devastating consequences for energy and grain importers while also generating ripple effects across a world still struggling with pandemic-induced supply chain disruptions.