Syrian opposition chief Ahmad Moaz al-Khatib is determined to step down in the face of what he sees as world "inaction" as government forces recapture territory from the rebels.
The European Union is set Monday to ease its oil embargo against Syria in favour of rebels fighting President Bashar al-Assad's regime in its latest signal of support to the opposition.
Nearly seven million people need humanitarian assistance in Syria, a senior United Nations official said Thursday, criticizing Damascus for hampering aid distribution.
Jordan, already straining from hosting hundreds of thousands of Syrian refugees, is increasingly feeling the heat from its own citizens who are fed up with the growing influx.
Leaders of five UN agencies on Monday appealed to the international community to stop the "cruelty and carnage" in Syria, warning they may soon be forced to suspend humanitarian aid to the war-torn country.
Germany is due Monday to send a specially-equipped military aircraft to bring more than 30 people seriously wounded in the Syrian conflict for treatment in the country.
Western nations have "hard evidence" that chemical weapons have been used at least once in the Syrian war but a UN investigation is now unlikely to get into the country.
US Secretary of State John Kerry and other G8 foreign ministers were on Thursday to hold a second day of talks in London focused on Syria after rebels again appealed for weapons.
The head of Syria's jihadist Al-Nusra Front has pledged allegiance to Al-Qaeda chief Ayman al-Zawahiri, but distanced his group from claims it has merged with Al-Qaeda in Iraq.
Syrian President Bashar al-Assad has warned that the fall of his regime would destabilise the region "for many years", as US President Barack Obama announced talks with Middle East allies over the crisis.
The UN General Assembly on Tuesday passed the first treaty regulating the conventional arms trade in an attempt to bring transparency and protection of human rights to the often murky industry.
The UN General Assembly is expected to adopt the first global treaty on the conventional arms trade Tuesday after the 193 member states failed to reach consensus on it last week.
Pope Francis prayed for a "political solution" in Syria and for "reconciliation" on the Korean peninsula in his first Easter Sunday message in front of a crowd in St Peter's Square.
Opposition chief Ahmed Moaz al-Khatib took Syria's seat at the Arab League on Tuesday as leaders gathered for the annual summit in Doha gave member states the "right" to arm rebels in the war-torn country.
UN Secretary General Ban Ki-moon "remains convinced that the use of chemical weapons by any party (in Syria) under any circumstances would constitute an outrageous crime".
International governments must act quickly to stop Syria's "complete destruction," UN leader Ban Ki-Moon warned Monday as the conflict entered a third year.
Syria's opposition coalition meets in Istanbul on Monday to select their first rebel prime minister, tasked with running daily life in large swathes of territory freed from regime control but mired in chaos and poverty.
France has joined Britain in voicing its willingness to supply weapons to Syria's rebels if it cannot convince its European partners to lift an arms embargo as the conflict enters its third year.
A divisive debate over Lebanon's electoral law may delay parliamentary elections scheduled for June 9, stoking fears of instability in a country already rattled by the conflict in neighbouring Syria.