Radiotherapy in conflict: lessons from Ukraine.

The invasion of Ukraine by Russia on Feb 24, 2022, has created a massive humanitarian crisis for Europe and degraded or destroyed a wide range of health-care infrastructures, including cancer care. The impact of this conflict comes on top of low-level war between Russian-backed forces in the eastern Donbas region since 2014, which had already created huge challenges for Ukraine's health-care system. Unlike many other countries worldwide affected by conflict, Ukraine's population had access to a moderately well developed cancer care system, including radiotherapy systems.