PM Rumen Radev summons Russian ambassador over latest drone strikes targeting ships in Bulgaria's Black Sea economic zone, admitting Moscow likely 'benefited' from the attacks. Bulgaria announced it will summon the Russian ambassador after two commercial ships were hit by drone strikes Key points and original sources are listed below.

• PM Rumen Radev summons Russian ambassador over latest drone strikes targeting ships in Bulgaria's Black Sea economic zone, admitting Moscow likely 'benefited' from the attacks.S1

• Bulgaria announced it will summon the Russian ambassador after two commercial ships were hit by drone strikesS2