The rising cancer rates and other negative effects are the direct results of the use of radioactive materials. Though these weapons themselves do far less physical damage than the larger nuclear bombs, the poisonous impact is nevertheless immense. Further, the international community (i.e. the UN and International Court of Justice) does not regulate these weapons in the same manner that they regulate, for example, chemical weapons. The difference is that the primary objective of depleted uranium weapons is not to poison the population, but rather to cause physical damage. Some states have called for banning or at least regulating more thoroughly the use of depleted uranium.
Larger nuclear weapons that pose an existential threat might steal headlines, but smaller depleted uranium weapons are currently being used and are having serious health repercussions. Pressure on the international community to seriously address the abolition of nuclear weapons should include acknowledgement of all weapons that lead to radioactive fallout.