The fire in the port city of Odessa led authorities to launch a country-wide inspection of safety regulations in holiday resorts and hotels in the country.
Italy's Interior Minister Matteo Salvini has appeared to buckle under pressure to ease the political standoff over a migrant rescue ship, saying he would allow minors to disembark after being at sea for two weeks.
A last-minute US warrant to seize an Iranian oil tanker preparing to leave Gibraltar after weeks of detention cast doubt over its departure on Saturday, prolonging a diplomatic spat between Tehran, London and Washington.
Houthi rebels claimed the facilities attacked included a prominent refinery and oil storage in eastern Saudi Arabia.
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