Ukraine war latest: Kyiv hits 5 Russian fighter jets in occupied Crimea, destroys 1

Key developments on August 4:

• 5 Russian fighter jets hit by Ukraine's SBU with drones in occupied Crimea, one destroyed
• 'Massive' Ukrainian drone strike targets Russian railway station in Volgograd Oblast, local official claims
• Ukrainian strike destroys Russian S-300 in occupied Zaporizhzhia Oblast, General Staff says