The head of Egypt's ruling military council, Field Marshal Mohamad Tantawi, is due to testify in the trial of former President Hosni Mubarak. Mr Tantawi, a former defence minister, will give evidence behind closed doors. Mr Mubarak, 83, is accused of ordering the shooting of protesters during the uprising that ousted him in February - charges he denies. Mr Tantawi takes the stand as his leadership is coming under increasing pressure both at home and abroad.He is now trying to mend its ties with Israel, which have been damaged by Friday's attack by protesters on the Israeli embassy in Cairo, the BBC's Bethany Bell in Cairo reports.The attack happened after thousands converged on Cairo's Tahrir Square to demand faster political reforms from the military leadership. Field Marshal Mohamad Tantawi's testimony could be key in deciding whether Mr Mubarak is found guilty or innocent.The military chief of staff and Omar Suleiman, Mr Mubarak's vice-president and intelligence chief, are also expected to give evidence.