Pressure builds on eurozone leaders ahead of summit

Eurozone countries are coming under increasing international pressure ahead of a summit later this week seen as crucial for the future of the single currency.

European markets opened lower on Tuesday, after the US ratings agency, Standard and Poor's, said almost every eurozone country's credit rating was under review, including France and Germany.

The head of the eurozone's finance group said the move was unfair, coming the day after France and Germany announced plans for tougher discipline among countries that use the single currency.

The US Treasury Secretary, Tim Geithner, is having a series of talks with European leaders and officials, to press the case for urgent action.

Stephen Evans reports from Berlin.