Clashes in Damascus after rebels tunnel into government-held areas

Insurgents make unexpected advance after months of losses at the hands of government forces elsewhere in SyriaFierce clashes broke out in the Syrian capital on Sunday after insurgents infiltrated government-held parts of the city through tunnels overnight in a rare advance after months of steady losses elsewhere in the country.It was a surprising breach of the security perimeter in Damascus, where the government has effectively walled itself off from opposition forces encamped in two enclaves in