The creation of puppet states can be a precursor to outright annexation: for example, the [[Soviet Union]] in 1921 carved an area from [[Mongolia]] to form the puppet state of [[Tannu Tuva]]; this was annexed by the Soviet Union in 1944. | The creation of puppet states can be a precursor to outright annexation: for example, the [[Soviet Union]] in 1921 carved an area from [[Mongolia]] to form the puppet state of [[Tannu Tuva]]; this was annexed by the Soviet Union in 1944. |