SNAPSHOT-Russia's war on Ukraine latest: Drones attack Kyiv and Dnipro

* Russia's Federal Security Service (FSB) said seven people connected with Ukrainian intelligence had been detained in Crimea, state-owned news agency TASS reported. * An explosion caused a second freight train to derail in the Russia region of Bryansk bordering Ukraine.

Russia launched a third nightly round of attacks on Kyiv in six days, authorities in the Ukrainian capital said on Wednesday, with a drone hitting a building in the Dnipropetrovsk region as Moscow steps up attacks on its neighbour. FIGHTING/MILITARY

* A fuel depot was on fire early on Wednesday near a crucial bridge linking Russia's mainland with Crimea, a Russian official said, days after Moscow blamed Ukraine for an attack that set fire to an oil depot in Sevastopol. Russian state-owned news agency TASS said a drone had fallen on the facility, citing emergency services. * Russia's Federal Security Service (FSB) said seven people connected with Ukrainian intelligence had been detained in Crimea, state-owned news agency TASS reported.

* An explosion caused a second freight train to derail in the Russia region of Bryansk bordering Ukraine. One also derailed on Monday following a blast. * The Ukrainian general in charge of ground forces said his troops would not give up the eastern city of Bakhmut as they prepare to begin a counteroffensive against occupying Russian forces.

* The United States plans to announce as soon as Wednesday a $300 million military aid package for Ukraine that will include a short-range air-launched rocket for the first time, two U.S. officials said. * Ukrainian President Zelenskiy told the Washington Post in an interview that he was not informed by the White House about a leak this year of U.S. classified military documents concerning the war in Ukraine.

* The European Union plans to boost ammunition production to aid Ukraine and replenish the stocks of EU member countries. * Belarus will hold another round of checks of the combat readiness of its military in May, including joint patrols of its airspace by Belarusian and Russian warplanes, the country's Defence Ministry said.

ECONOMY * Russia's Foreign Ministry said proposed talks between Russia, Ukraine and Turkey on the Black Sea grain deal on May 5 have not yet been agreed, Russian media reported.

* Turkey's trade data has started to reflect that Ankara has stopped allowing the re-export of Western goods under sanctions to Russia after repeated warnings from Washington, a senior U.S. Treasury Department official said. * The European Commission said it set restrictions until June 5 on imports of Ukrainian wheat, maize, rapeseed and sunflower seed to ease the excess supply of these grains in Bulgaria, Hungary, Poland, Romania and Slovakia.

QUOTES * "We will continue, despite all the forecasts and advice, to hold Bakhmut, destroying Wagner and other most combat-capable units of the Russian army" - General Oleksandr Syrskyi, commander of Ukrainian ground forces.

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