The balancing act of Bulgaria's Moscow-friendly leader stands on shaky ground.

Since taking office in May, Bulgarian Prime Minister Rumen Radev has taken a harsh line on Ukraine while adopting steps his critics say are accommodating to Moscow.

Radev's course has now come under scrutiny as

Os ataques no mar Negro intensificam-se "de dia para dia". O ministro da Defesa búlgaro quer meios aéreos, mísseis terra-ar e patrulhas. Resposta da NATO ainda incerta.

© VASSIL DONEV/EPA