headlines: Russia Strikes Odesa Port, Stirring Doubts on Deal to Export Grain
articles: ODESA, Ukraine — A string of explosions rocked Ukraine’s southern city of Odesa on Saturday, hitting one of the country’s most important ports less than 24 hours after Russia and Ukraine signed a deal to secure the transit of millions of tons of grain through Black Sea routes.
  
  The strikes raised concerns about Russia’s commitment to the agreement, which was brokered by the United Nations and Turkey, before it could even be put into action. The deal is seen as critical for shoring up global supplies after a steep drop in Ukrainian grain exports raised fears of food shortages in poorer nations.
  
  The string of explosions were also grim reminders of Russia’s violent fulcrum of the five month old war: signals from Moscow that it can rain destruction on any part of Ukraine at random, no matter the military situation on the front lines or diplomatic breakthroughs elsewhere.