stephany flanders, bbc news. >> this is newsday on the bbc. i am in singapore. kasam in london.he headlines this hour, counter-terrorism officials in the u.s. are investigating credible, but uncorroborated threats just days before the anniversary of the september 11 attacks. and president obama has challenged his opponent to challenge his plan to create more jobs and he called for an end to the political circus. and as the september 11 anniversary approaches might u.s. news network's are reporting that officials are investigating what has been described credible -- as credible but unconfirmed threat attacks planned against the u.s. is security operation is already in place in new york, meanwhile audio tapes of communications record on the morning of the attacks 10 years ago have been made public. the recordings, many of which have not been heard before, painted a dramatic picture of confusion and or -- and horror. >> september 11, at 8:13 a.m., air-traffic controllers lose contact with americans airlines flight 11. not far from new york. then a call from an attendant. >> someone

here is stephanie flanders. >> the imf has taken a look at the global economy and founded a scary place. today's report talked of a dangerous new phase in what may be -- maybe a week and of the recovery, with many economies facing in the big growth. it is a big change from a few months ago, and nowhere has the outlook changed faster than in italy. italian newspapers were full of the news that the government's credit rating has been caught for the first time in five years. the fund says italy is paying the price for the failure to resolve the crisis here in athens. where students stick to the streets again today to protest government cuts. >> it is different in greece and italy. and the lack of clarity is affecting the credibility when it comes to judgment on other countries. >> if the crisis in the euro- zone is one reason why the fund is sharply lowering its growth forecast. it expects the euro-zone to grow by 1.6% and the u.s. to grow by 1.5%, half as fast as last year. the forecast for the u.k. is for growth of 1.1%. the chancellor's budget assumes growth of 1.7%. the other big dange

stephanie flanders starts our coverage. >> if policy makers wanted to raise the alarm this week about risks facing the global economy, they have done it. the markets are very alarmed. >> there is a fiscal, financial, and banking crisis. >> economic figures released from the u.s. are terrible. >> if you are trying to play these markets on a day-to-day basis, you will be playing with a gun to your head. >> markets tumbled around the world, with the ftse down nearly 5%. in a bbc debate held at the international monetary fund, the head of a large investment fund said the problem was simple. investors do not buy the solutions to the crisis being offered by politicians, especially when it comes to greece. >> the market makes a simple calculation. will growth be restored? the answer is no. will the debt overhang be lifted? the answer is no. new capital, which is the oxygen to any economy that recovers, stands on the sidelines. >> david cameron and five heads of state added to urgency with a letter to the french president about the g 20 summit. they said the risks were reaching pre-crisis hig

stephanie flanders has coverage from there. >> if policy makers wanted to raise the alarm this week abouthe risks facing the global economy, then they have done it. the markets are very large. >> we have a political crisis, a financial crisis, and a banking crisis. >> of the news release by the u.s. are terrible at the moment. >> if you're trying to play these markets on a day-to-day basis, you will be playing with a gun to your head. >> markets tumbled around the world today with the ftse in london down nearly 5% this is what happened to it over the past six months. at abc debate, held at the international monetary fund, the head of one of the world's largest investor funds said that the problem was simple. investors do not buy the solution to the crisis that is being sold to them by politicians, especially when it comes to greece. >> 1 lawn looks at the greek programs, the -- when one looks at the great programs, the market looks at one simple ticklish impaired will growth be restored? the answers now. will the problems be lifted? >the answer is no. and everyone stands on the sidelines.