Thermobaric weapons are nothing like a Nuclear weapon. Even the smallest fission based nuclear weapon in the arsenal of nuclear powers have got an explosive power of 1 kilo ton or more when used as a tactical weapon. That is the power of 1 thousand tons of TNT being exploded.In other words, Turkey has achieved a quasi-nuclear deterrent without nuclear weapons.
Current thermonuclear bombs are as small as a 1 Megatons - that is 1 million tons of TNT strength- up to 50 megatons.
Never mind the immediate and secondary fallout of radioactive destruction they impart.
Our Gazap, is a 1 ton bomb. TNT equivalency of a thermobaric bomb is between 1.1 to 1.9 times the weight of the bomb. So a 1 ton MK84 carries 429 kg of explosives. So it has a TNT explosive strength of roughly just under 1 ton.
I am afraid I have to agree with @Sanchez
Germans should first complain about Americans, Russians and Chinese plus UK armed forces that have US manufactured versions, who are known to have openly used these weapons.
There is absolutely no legislation or international agreement that bans the use of these weapons.