Troops frequently use substances to help cope with untreated PTSD and anxiety, producing a negative spiral Troops frequently use substances to help cope with untreated PTSD and anxiety, producing a negative spiral Oleksandr relapsed into addiction after treatment for a shoulder injury sustained during fighting. Pine trees near the rehabilitation centre in Kyiv. The Ukrainian flag outside the centre. Petro, a war veteran, who has been treated at the rehab centre and now works there. A gym room