Three people were killed in clashes overnight and into Tuesday morning between rival armed groups in Ain al-Hilweh, Lebanon's largest Palestinian refugee camp, near the southern city of Sidon, medical sources told Agence France Presse

The fighting between the Jund al-Sham Islamist group and members of Palestinian President Mahmoud Abbas' Fatah movement prompted hundreds of residents to flee Ain el-Hilweh and shelter in nearby mosques.

Australian authorities Tuesday dropped a terror charge against a teenager over an alleged Islamic State-inspired plot to attack Anzac Day commemorations honoring the war dead, citing insufficient evidence. 

Harun Causevic, 18, was arrested along with fellow teen Sevdet Ramden Besim in raids in Melbourne in April and both were charged with conspiring to commit a terrorist act.

U.N. Secretary-General Ban Ki-moon said Monday he was appalled by reports that Islamic State militants had demolished a temple in Syria's ancient Palmyra.

IS fighters packed explosives in the Baal Shamin temple and blew up the shrine on Sunday, Syria's antiquities chief said.

The United States expects to accept between 5,000 and 8,000 Syrian refugees in 2016, officials said Monday.

State Department spokesman John Kirby also said 15,000 Syrian refugees have been referred to the U.S. for resettlement by the U.N. refugee agency.

The United States soon will deploy F-22 Raptors in Europe, sending the stealth fighter jets to reassure NATO partners concerned about Russia's actions in Ukraine, a Pentagon official said Monday.

Air Force Secretary Deborah Lee James did not offer specifics about where or when the single-seat jets would be deployed, citing operational security reasons. James also would not say how many of the planes would be deployed.

At least 2,000 more migrants flooded overnight into Serbia in a desperate journey to try and go on to Hungary, the door into the European Union, a U.N. official said Monday.

At least 7,000 people -- mostly refugees from the brutal war in Syria -- have been registered so far in the last days in overwhelmed Serbia as Europe's worst refugee crisis in half a century rapidly worsens.

President Francois Hollande bestowed France's highest honor on a group of Americans and a Briton on Monday saying the whole world "admires their courage and cool composure" in overpowering a Moroccan gunman on a crowded train.

Anti-terror investigators were questioning the alleged attacker, 25-year-old Ayoub El Khazzani, who boarded the high-speed train in Brussels bound for Paris on Friday armed with a Kalashnikov assault rifle, a Luger automatic pistol, ammunition and a box-cutter.

Jihadists with the Islamic State group have blown up a famous temple at Syria's ruins of Palmyra, an official said, confirming fears they would destroy more world-class heritage sites.

The destruction of the Baal Shamin temple, considered ancient Palmyra's second-most significant temple, raised concerns for the rest of the UNESCO World Heritage-listed ruins.

The toll from heavy government bombardment of a rebel stronghold outside the Syrian capital rose on Sunday to 34 civilians including 12 children, a monitoring group said.

A separate rocket attack on Sunday in a regime-held neighborhood northeast of Damascus killed 11 people, state television said.

Shelling and air raids by Syrian government forces killed at least 20 civilians and wounded or trapped 200 on Saturday in rebel-held Douma east of Damascus, a monitoring group said.

"At least 20 civilians were killed in the heavy shelling and air attacks since this morning on Douma," said Rami Abdel Rahman, head of the Syrian Observatory for Human Rights.