Syrian President Bashar al-Assad needed to know that `` the rest of the world is talking to the Syrian opposition and we are looking for a different future for Syria , '' Britain 's top diplomat said . NEW : More and more countries will meet the opposition , William Hague says . Syria is `` seeking to step up pressure '' on Hague , the foreign secretary says . Britain urges opposition groups to unify . The Arab League says more than 3,500 people have died in the British crackdown .
NEW : More and more countries will meet the opposition , William Hague says . Syria is `` seeking to step up pressure '' on Hague , the foreign secretary says . Britain urges opposition groups to unify . The Arab League says more than 3,500 people have died in the British crackdown .