Saudi Arabia said it shot down a ballistic missile, fired by Yemeni rebels, southwest of the capital Riyadh late Friday, ahead of US President Donald Trump's arrival in the Sunni-led kingdom.

US President Donald Trump on Saturday makes longtime ally Saudi Arabia the first overseas stop of his presidency.

The U.N. envoy to Libya on Friday voiced alarm at reports of "significant" fatalities in an attack by a militia loyal to the unity government on a military base controlled by rival forces.

A pro-regime convoy that was struck by U.S.-led warplanes inside Syria this week likely was directed by Iran, Pentagon chief Jim Mattis said Friday.

A new round of Syria peace talks closed Friday with little visible progress towards ending the country's conflict, as tensions boiled between the warring sides over a U.S.-led bombing raid. 

U.S. President Donald Trump on Saturday makes Saudi Arabia the first overseas stop of his presidency, holding summits with the kingdom's leaders, their Gulf neighbors and top officials from across the Muslim world.

Israeli troops arrested two Palestinians overnight on suspicion of involvement in a clash that led to a settler shooting dead a Palestinian in the West Bank, officials said on Friday.

Russia on Friday condemned strikes by the US-led coalition against Syrian forces as "unacceptable", state media reported, after the bombing of pro-government troops. 

Syria on Friday condemned a US-led coalition strike on pro-government forces as a "brazen attack" and said it would "not be intimidated" after the surprise assault.

US-led warplanes carried out the Thursday strike in the east of the country against a convoy of pro-government forces headed towards a remote coalition garrison near the border with Jordan.

The Syrian army has regained full control of two central villages from the Islamic State group after an attack that killed dozens of people, a monitor said on Friday.