Key developments on June 5: Battlefield situation is difficult, but Ukraine ‘has chance’ to change it, Syrskyi saysUkraine has used US weapons to hit targets inside Russia, source tells APRussia still hasn’t restored ferry crossing in Crimea after Ukraine’s recent strike, military saysOver 800 children killed due to Russia’s war in Ukraine since 2014Russian attacks on Kherson, Donetsk oblasts kill 1, injure 7The situation on the battlefield in Ukraine’s east remains difficult, but Ukrainian soldiers can shift it to their advantage by doing “everything possible,” Commander-in-Chief of Ukraine’s…