Yemeni lumberjack Ali al-Emadi spends hours chopping down an acacia tree with an axe as his 12-year-old nephew helps out splitting logs. In a country blighted by war, Emadi had to turn to logging in his northern al-Mahweet region to eke out a living. An economic collapse has wiped out the farming and building work he used to travel around the country for. But with demand for firewood soaring due to fuel shortages, there are now concerns that the country's humanitarian crisis, with millions facing starvation, has compounded the risk of deforestation - threatening both the environment of Yemen and any hope of a long-term livelihood for men like Emadi. REUTERS/Khaled Abdullah SEARCH "ABDULLAH DEFORESTATION" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY Matching text: YEMEN-SECURITY/DEFORESTATION TEMPLATE OUT