BP has said the cost of cleaning up the oil leak in the Gulf of Mexico has now reached 2.65 billion dollars. The oil giant said this included the cost of the spill response, containment, relief well drilling, grants to Gulf States and claims paid. The total has risen to an average of 100 million dollars a day over the past three days. Later, BP said Tropical Storm Alex would delay plans to boost its oil-siphoning capacity until next week. The company said that more than 39,000 people are now involved in the response effort as oil from the spill washed onto the beaches of Mississippi resort town Biloxi for the first time. BP's embattled chief executive Tony Hayward is in Moscow where he has held meetings with Russian officials including Deputy Prime Minister Igor Sechin. A spokesperson for Mr Sechin said Mr Hayward had given assurances about BP's commitment to its strategic partnerships in Russia.