Douglas Alexander: 'Egypt generals cannot act with impunity'
16 August 2013 Last updated at 18:15 BST
The death toll has been rising in Egypt, as protesters loyal to ousted President Mohammed Morsi clashed with security forces.
The UK's shadow foreign secretary has called for a suspension of US aid to Egypt, adding that foreign ministers will have a chance to take a similar step next week.
Douglas Alexander said there was a "very heavy burden of responsibility to act at this very dark moment in Egypt's history."