The following are videos of clusters bombs collected over the last two days. Earlier videos can be found here and here. I also recommend reading the Human Rights Watch report, Syria: New Evidence Military Dropped Cluster Bombs, which goes explores the issues surrounding the use of cluster bombs in more detail.
First of all two videos showing the the tail section of cluster bomb canisters in the Damascus suburb of Hamouriah, northeast of the city. It's unclear if these are two separate incident, although looking at the surrounding area it is possible
This video from Al Zafaraneah, Rastan shows another tail section buried in the soil
These next 3 videos from Kafar Takharim, Idlib, appears to show the same cluster bomb canister, which helpfully has the model and what is contains stenciled on the side, confirming this is a RBK 250-275 with AO1-Sch bomblets
Finally here's two videos from locations in Idlib, the second from Isqat, yet again showing partly buried tail sections
Over the last few days there's been a marked increase in the number of cluster bomb remains being filmed in Syria, and until today most were filmed around Maarrat al-Numan, along the main highway that connects central Syria (Hama, Homs, then Damascus and Daraa) to northern Syria (Idlib, Aleppo), which has recently come under opposition control. The concentration of reports from that area suggested at first that the use of cluster bombs was related to attempts to regain an important supply route to Aleppo. The following video shows four examples of cluster bombs used in the area, some of which were covered in my earlier post on the topic
However, in the last 24 hours multiple videos have been posted online showing cluster bomb remains in locations across Syria. In all of the examples they appear to show RBK-250 cluster bombs with PTAB 2.5m bomblets with removed fuzes. These first two videos show bomb casing and cluster bomblets in Tell Rifaat, north of Aleppo
From the coastal region of Latakkia we have this video that shows a complete casing along with a number of unexploded bomblets
To the east of Damascus we have this remarkable collection of casing and bomblets from 5 separate cluster bombs from Deir Al-Assafeer, East Ghouta
These videos were posted online in the last 24 hours, and demonstrates that cluster bombs now appear to be used across Syria. In the last 4 days I've seen videos of between 17-20 separate cluster bombs, compared to 3 videos in the prior 18 months, clearly pointing to an escalation in their use. It should be noted that unlike normal bombs cluster bombs generally always leave behind bomb casings, as they open up to scatter bomblets rather than exploding.
Cluster bomblets leave a deadly legacy for decades after conflicts have ended, as well as being extremely dangerous to handle, something that unfortunately is happening in a great number of these videos. Earlier videos of cluster bombs dropped in Syria can be found here.