The Washington Post reports: Conflict in Syria burst into neighboring Lebanon and Turkey on Monday, with one Lebanese cameraman killed and at least four people injured in fighting on the Syria-Turkey border.

The attacks, on the eve of a deadline under a fading U.N.-backed deal for ­Syrian troops to withdraw from cities and cease hostilities amid a widespread uprising, risked bringing the Syrian conflict to what the Turkish government called a “new stage.”

With the populations in neighboring countries divided between those who support the opposition in Syria and those who hope that embattled President Bashar al-Assad will remain in power, some fear that the conflict could expand across the region and widen political, ethnic and religious fault lines.

“I think we can expect more violence along the borders. I think that’s going to be the new normal,” said Shadi Hamid of the Brookings Doha Center in Qatar. “The more refugees there are trying to escape, the more skirmishes there will be.”

Activists have reported heavy casualties in recent days, with 84 civilians killed Monday, according to the Britain-based Syrian Observatory for Human Rights, along with 19 members of the security forces and eight defectors. Hopes are rapidly dimming that a six-point peace plan that U.N.-Arab League envoy Kofi Annan negotiated with Syrian authorities can halt the violence.