Lebanon’s army surrounded a border town occupied by Islamist militants on Wednesday as mediators reported progress in negotiations to end to the most serious spillover of Syria’s civil war yet onto Lebanese soil.

Soldiers arrested men and evacuated refugees from the hill town of Arsal on the border with Syria. One Syrian refugee said she had seen fighters’ bodies lying in the streets.

“We saw death with our own eyes,” said Mariam Seifeddin, a 35-year-old mother of nine, who said she had sheltered with about 50 others in a single room without food or water for three days amid intense fighting. […]