MOSCOW (Reuters) - Emergency workers toiling to clean up an oil spill in the Black Sea have detected seven new slicks, a Russian official told the TASS state news agency on Friday, as authorities struggle to mitigate the effects of the nearly month-old disaster.

Fresh oil started pouring from a stricken Russian tanker in the Black Sea on Friday, said officials in Moscow, as Ukraine warned of "terrible environmental consequences" from the spill.By trying to "conceal the terrible environmental consequences" Moscow had left the entire Black Sea region vulnerable to the fallout,

Nearly 500,000 metric tons of Russian oil products are trapped on tankers hit by U.S. sanctions, LSEG data showed on Wednesday. On Jan. 10, new Russia-related sanctions targeted more than 180 vessels and insurance companies,

LSEG (London Stock Exchange Group) data released on Wednesday show that almost 500,000 metric tonnes of Russian oil products are stuck on tankers under US sanctions. Source: Reuters Details: On 10 January,

The sanctions imposed by the United States on January 10 against the Russian oil sector have halted about one-tenth of Russia's shadow fleet. The value of the oil it transports could exceed $3.5 billion.

Sanctions imposed by the United States on January 10 against the Russian oil sector have halted about one-tenth of Russia's shadow fleet, which transports oil worth up to $3.5 billion. The new sanctions may significantly disrupt Russian oil supplies,

The latest US sanctions have the potential to significantly disrupt Russia's energy exports, the International Energy Agency said. "We're waiting to see how things will unfold before putting a number on it,