Special monitoring mission of OSCE identified modern Russian multiple rocket launcher system TOS-1 also know as “Buratino”. This vehicle based on T-72 tank was spotted at the Lugansk People’s Republic military training ground in Kruhlyk village located near Lugansk. This weapon was designed to destroy fortifications and it’s able to kill soldiers even in deep trenches. When the rocket explodes it sprays flammable aerosol that burns everything around. See more tech details at https://en.wikipedia.org/wiki/TOS-1

On 26 September the SMM observed at least 36 tanks (type unknown) at the training area in “LPR”-controlled Kruhlyk (31km south-west of Luhansk). A day earlier the SMM spotted at the same training area one heavy multiple launch thermobaric rocket system (TOS-1 Buratino, 220mm). – OSCE SMM report posted on September 28, 2015

See complete report posted by OSCE on September 28 at http://www.osce.org/ukraine-smm/186276. This is the 1st time when TOS-1 was reported by SMM. You can check location of Kruhlyk village on Google Map here.

Previously National Security and Defense Council (NSDC) of Ukraine reported that TOS-1 was used by the enemy on January 13, 2015 in attack on Ukrainian Army positions near Vesele village located near Debaltseve. See exact location on Google Map here.

Yesterday insurgents first time attacked suburbs of Vesele village using MSRL TOS-1 “Buratino” which is manufactured only in Russian Federation. Also terrorists used mortars, artillery, “Grad” and other heavy weapon. – NSDC report on January 14, 2015 at http://mediarnbo.org

Later on March 14, 2015 one of our reporters located in Lugansk saw newer modification TOS-1A “Solntsepyok” near one of the military bases of LPR insurgents which was close to the city center. TOS-1A has 24 rockets instead of 30 as at TOS-1 and its fire range was increased.

Terrorists in #Lugansk got modern #Russian MRLS “Buratino” modification TOS-1A “Solntsepyok”. Unfortunately, this is now confirmed info… — Lugansk News Today (@LUGANSK_TODAY) March 14, 2015

This type of weapon is banned by the United Nations Convention on Certain Conventional Weapons (CCW or CCWC), concluded at Geneva on October 10, 1980, see details here

Protocol III on Prohibitions or Restrictions on the Use of Incendiary Weapons prohibits, in all circumstances, making the civilian population as such, individual civilians or civilian objects, the object of attack by any weapon or munition which is primarily designed to set fire to objects or to cause burn injury to persons through the action of flame, heat or a combination thereof, produced by a chemical reaction of a substance delivered on the target. The protocol also prohibits the use of air-delivered incendiary weapons against military targets within a concentration of civilians, and limits the use of incendiary weapons delivered by other means. Forest and other plants may not be a target unless they are used to conceal combatants or other military objectives.[2][10] Protocol III lists certain munition types like smoke shells which only have a secondary or additional incendiary effect; these munition types are not considered to be incendiary weapons. – United Nations Convention

The video below is very good example how TOS-1 works.