These amnesties have been offered for years by the Syrian government but from all the reports I've seen of these agreements this year, I think the pace of fighters taking up the offer increased after Russia joined the war. The reason isn't always fear; it's also seeing light at the end of tunnel -- a growing conviction or hope that the Syrian government is strong enough with Russia's help to restore peace to the country.
Here is the FARS report on the Aleppo amnesties and the military situation there as of yesterday:
July 28, 2016
TEHRAN (FNA)- A large number of terrorists laid down arms and surrendered to Syrian army in Aleppo province as the soldiers of president Bashar al-Assad are racing towards Aleppo after completing siege of the city and capturing the most vital stronghold of the militants in the region, Bani Zeid.
"Scores of Takfiri militants laid down arms and turned themselves in to the Syrian army in Bani Zeid and al-Lairamoun to be pardoned," a battlefield source said on Thursday.
"The move by the terrorists in Aleppo province came after army troops put the militants to rout in Bani Zeid and al-Lairamoun and completed the siege of Aleppo city in the East," the source added.
Forces loyal to president Assad took full control of Bani Zeid in the Eastern parts of Aleppo on Thursday. They also managed to recapture all building blocks, firms and factories in al-Lairamoun industrial zone in Northern Aleppo province.
The Syria army and popular forces had also managed to cut off all the supply lines and passages used by the terrorists to move from the North to the Eastern neighborhoods of Aleppo city on Wednesday.
Local sources said Thursday terrorists in the besieged districts of Aleppo have blocked the “safe passages” provided by the Syrian Army for the civilians to leave the militant-held districts in Syria’s second-largest city.
Lebanon’s Al Mayadeen TV channel reported the move by the terrorists in Aleppo came after a large number of people, including civilians and militants who decided to lay down their arms abiding new offer of amnesty by the Syrian government, left the city of Aleppo through ‘safe corridors’ provided by Syrian pro-government forces.
Some reports also suggest militants groups have employed snipers to shoot many people getting through the 'safe passages'.
Syrian state television quoted the governor of Aleppo as saying that three humanitarian corridors have been established for civilians to leave the city. President Bashar Assad also offered an amnesty for rebels who surrender within three months.
Russian Defence Minister Sergei Shoigu also said a fourth corridor would be set up in the North of the city for militants, near the Castello road which the army recently took over.
The Syrian army said on Wednesday it had dropped thousands of leaflets over militant-held districts in Aleppo, asking residents to cooperate with the military and calling on militants to surrender.