ADEN, Yemen/DUBAI (Reuters) - With global attention on Yemen focused on a fragile truce in its main port of Hodeidah, fighting between rival forces in the country’s four-year war has surged elsewhere. FILE PHOTO: A worker sprays pesticides during an anti-cholera campaign in Sanaa, Yemen March 21, 2019. Picture taken March 21, 2019. REUTERS/Mohamed al-Sayaghi/File…