[ti:] [ar:] [al:] [00:00.00]Stock markets in Europe and the United States have fallen sharply [00:04.11]in response to further signs that the debt crisis in Greece is intensifying [00:08.46]and could spread to other countries. [00:10.51]Share prices in New York, London, Frankfurt and Paris [00:13.81]fell by more than 2% after a major international credit rating agency [00:18.41]Standard & Poor's downgraded Greek debt [00:21.40]to a level known informally as junk. [00:23.33]Nils Blythe has more. [00:24.82]Standard & Poor's downgraded its assessment [00:27.56]of Greek bonds to the so-called junk status [00:30.04]because of the growing danger [00:31.97]that the bond holders will not be paid back in full. [00:34.59]Many big investment funds have rules [00:37.45]that forbid them from holding junk bonds, [00:39.13]says the move is likely to trigger a further round of selling. [00:42.17]Share markets have taken fright, [00:44.16]fearing that if Greece does default on its debts, [00:46.78]it would hit many European banks which hold Greek bonds [00:50.01]and could trigger a wider financial crisis. [00:52.75]Already pressure is mounting on Portugal [00:55.86]which has also seen its credit rating downgraded today, [00:58.84]although it remains above junk status.