A US-and Russia-brokered ceasefire dubbed by Washington as perhaps the "last chance to save Syria" entered its first full day on Tuesday, amid scepticism over how long it would hold.

Libya's UN-backed unity government lost control on Monday of a third oil port seized by rival forces, raising fears of a major outbreak of fresh violence in the chaos-ridden country.

Hillary Clinton sought to draw a line on Monday under the health scare rocking her White House campaign, assuring supporters she will return to the fray this week.

Two huge US strategic bombers flew over South Korea on Tuesday in a show of force against North Korea following Pyongyang's fifth and largest-ever nuclear test.

A ceasefire in Syria brokered by Russia and the United States is due to begin at sundown on Monday, after scores of civilians were killed in a bloody weekend of strikes.

Croatia’s main conservative party looked set for victory in the snap election, according to preliminary results, but will likely be forced into another coalition furthering political uncertainty in the EU's newest member.

 Libya’s internationally backed government has urged its forces to act after two oil terminals fell to rival troops, raising fears of further violence in a country already gripped by turmoil.

Hillary Clinton was diagnosed with pneumonia and was dehydrated when she suddenly left a 9/11 memorial ceremony, her doctor said, sparking fresh speculation about the Democratic presidential candidate's health barely eight weeks from Election Day.

A barrage of airstrikes on rebel-held areas in Syria have killed scores of people, just hours after the government in Damascus approved a US-Russian plan to halt fighting in the country's suppurating civil war.