Syria’s main opposition has formally suspended its participation from peace talks in Geneva. UN Special Envoy Stefan De Mistura announced the pause – though he said what he called "technical discussions" would continue.

Postponed. But Syria’s peace talks haven’t yet collapsed.

"I heard today – by meeting the delegation of the HNC -- their intention to postpone their formal participation in the parley to the negotiations – in order to express their own displeasure and concern on the humanitarian situation degradation and on the problems related to the cessation of hostilities," said Mistura.

GENEVA, April 18, 2016 (Xinhua ) -- UN Special Envoy for Syria Staffan de Mister (1st L) attends a meeting with the High Negotiations Committee (HNC) delegation at Palais des Nations in Geneva, Switzerland, April 18, 2016. New round of the Intra-Syria talks entered into second week with UN special envoy Staffan de Mister holding separate discussions with government delegation and HNC delegation Monday. (Xinhua/POOL/Xu Jinquan)

The fighting has been intensifying on several fronts for days -- but Aleppo seems the worst affected.

Aid agencies say more than 100-thousand civilians are now trapped: the vast majority unable to flee across a closed Turkish border.

But negotiators here maintain the cessation of hostilities hasn’t completely collapsed – so they want until Friday when they’ll re-assess the situation on the ground. Between now and then – discussions will in fact continue.

Though there is now another potential sticking point. Israel has mostly kept some distance from the conflict to its north – but on Sunday it held a cabinet meeting in the disputed Golan Heights.

Speaking earlier on Monday, the Syrian government reacted furiously.

"We re-affirmed to De Mistura Syria’s right to recover the occupied Syrian Golan for the lions of 1967 by all legal means according to the U.N. charter, including Article 51 of the Charter on self-defense," said Bashar Jaafari, head of Syrian government delegation.

GENEVA, April 18, 2016 (Xinhua) -- Head of the Syrian government delegation Bashar Jaafari(front) addresses the media at Palais des Nations in Geneva, Switzerland, April 18, 2016. UN Special Envoy for Syria Staffan de Mistura on Monday said that the main Syrian opposition delegation, the High Negotiation Committee or HNC, is intending to suspend their formal presence to the ongoing peace talks in the UN headquarters of the Palace des Nations, but will remain staying in Geneva for technical discussions. (Xinhua/Xu Jinquan)

Over the last six days – there has been little progress here.

Over the last six weeks -- there had been, here. But it’s fast unravelling.