New restrictions on Syrians entering Lebanon have come into effect, further slowing the flow of asylum seekers trying to escape the war.
Previously, travel between the two countries was largely unrestricted, but now Syrians will have to obtain a visa.
Lebanon hosts more than a million Syrian refugees and this is the latest step to try to stem the influx.
Millions of Syrians have been displaced by the civil war as rebel forces try to oust President Bashar al-Assad.
The uprising began with protests against his rule in 2011 and degenerated into civil war a year later. The rise of Islamist groups has added to the refugee problem.
Lebanon, which shares a border with Syria, is one of the countries most affected by the large numbers of refugees.
Before now, Syrians could stay in Lebanon for up to six months automatically. Under the new measure, Syrians wanting to enter Lebanon will have to fulfil certain criteria in order to be granted a visa at the border.
It is unclear what the rule will mean for the many Syrians already in the country and not registered as refugees.