Ahead of a Seanad motion on Yemen, Dominic MacSorley, CEO of Concern Worldwide, has cautiously welcomed the Hodeidah ceasefire announcement and UN Special Envoy Martin Griffith’s critical involvement in the peace talks.

Syrian government and opposition forces fighting over the strategic Barada Valley have agreed a temporary ceasefire, according to a media arm of Hezbollah.

Syrian government forces are pressing an offensive in a valley north west of Damascus as 10 rebel groups suspended talks on planned peace negotiations because of what they described as government violations of a ceasefire deal.

Syrian rebel groups say they are suspending talks ahead of planned peace negotiations later this month because of what they describe as continuing government violations of a four-day old ceasefire deal.

Despite rebels in Syria clashing with government forces and their allies near Damascus today, a ceasefire in Syria appears to be largely holding.

A nationwide ceasefire between Syrian government forces and opposition rebels has come into effect.

Russian president Vladimir Putin said a Syrian ceasefire agreement has been reached with Turkey.

Syrian rebels have reached a ceasefire deal to evacuate from eastern Aleppo in an effective surrender, as Russia declared all military action had stopped and the Syrian government had assumed control of the former rebel enclave.

Update at 11pm: A Syrian activist monitoring group says that 12 aid workers and truck drivers were killed when their humanitarian aid convoy was hit by airstrikes in Aleppo province.

Syria's military command has declared the US-Russian brokered ceasefire over, blaming the country's rebel groups for undermining the agreement.

Syria's fragile cease-fire started to unravel on Sunday with the first aerial attacks on rebel-held neighbourhoods of Aleppo and a southern village that killed at least eight people.

The United States and Russia have called for a meeting of the UN Security Council to discuss the fragile ceasefire in Syria.

The Syrian army says it has begun implementing a US-Russian ceasefire, but the country's most powerful insurgent groups have not yet said whether they will abide by it.

The US and Russia have announced a breakthrough agreement on Syria that foresees a nationwide ceasefire starting early next week.

Latest: Russia's foreign minister has said he is thinking of "calling it a day" on talks with the United States to forge a ceasefire in Syria.

The commander of Colombia's biggest rebel movement said its fighters will permanently cease hostilities with the government beginning with the first minute of Monday, as a result of their peace accord for ending five decades of war.

Russia has announced it is willing to extend a ceasefire in the Syrian city of Aleppo.

Syria's military has declared a unilateral, three-day ceasefire for the entire country.

US and Russia succeed in having fragile ceasefire extended to city

The United States and Russia have persuaded Syria's government and moderate rebels to extend the country's ceasefire to the northern city of Aleppo, US officials said.

Azerbaijan’s defence ministry has announced a unilateral ceasefire against the separatist region of Nagorno-Karabakh, a claim that rebel forces there promptly rejected.

Russia has accused the Ukrainian government of dragging its feet on implementing last year’s cease-fire agreement.

Fighting in Syria appeared to have mostly stopped yesterday, the second day of a US-Russian deal on a cessation of hostilities which seemed to be holding despite accusations of violations and air strikes in Aleppo.

The Syrian ceasefire was reportedly broken just 15 minutes after coming into effect last night.

A car bomb has exploded on the edge of a government-held central town, in Syria, killing two and wounding several others, just hours after a ceasefire brokered by Russia and the US began, the country's state news agency said.

Warplanes yesterday unleashed air strikes on the suburbs of the Syrian capital Damascus and near the rebel-held city of Aleppo, hours before a ceasefire brokered by the US and Russia was due to go into effect at midnight.

A ceasefire brokered by the US and Russia has come into effect across Syria, but the Islamic State group and al Qaida's branch in Syria, the Nusra Front, are excluded.

US secretary of state John Kerry said yesterday that a “provisional agreement” has been reached on a ceasefire that could begin in the next few days in Syria’s five-year civil war.

US secretary of state John Kerry said a "provisional agreement" has been reached on a ceasefire in Syria's five-year civil war.

US believes Russia buying time to crush Syrian rebels

The US has dismissed a proposal by Russia for a March 1 ceasefire in Syria, saying Moscow is giving itself and the Syrian government a three-week window to try to crush moderate rebel groups.

Kurdish rebels fighting Turkey for autonomy have ended a temporary unilateral ceasefire they had declared a month ago in their bid to reduce tensions ahead of Turkey’s November 1 election.

The US, Russia and other world powers are considering a new plan to set up a ceasefire in Syria within the next four to six months, sources have said.

Armed ethnic groups and the Burma government have resumed talks as they try to reach a nationwide ceasefire agreement to end six decades of fighting.

EU leaders are likely to keep economic sanctions on Russia in place until a Ukraine ceasefire deal is fully working, after German chancellor Angela Merkel said it would be wrong to ease pressure on Moscow prematurely.

Ukraine’s military has said it will start pulling back its heavy weapons from the front line with Russian-backed separatists as required under a ceasefire agreement.