The coronavirus pandemic is worsening the humanitarian situation in the world's deadliest conflicts and threatens to unleash economic devastation that will intensify violence, United Nations diplomats and experts warn. Covid-19 is hampering aid programmes, diverting the attention and resources of major powers battling the deadly virus at home, and cutting remittances to already fragile, war-weary economies, they say. "There's a very high level of concern that its economic impact is going to spark more disorder, more conflict," said New York-based UN expert Richard Gowan. "We're still only really in the opening act of quite a long drama," he said. UN Secretary General Antonio Guterres's plea for a global ceasefire back in March has gone largely unheeded, with fighting continuing to rage in hotspots such as Yemen, Libya and Syria. Lockdowns are restricting the movements of envoys, peacekeeping troops and non-governmental agencies, hindering mediation efforts and impeding the distribution of desperately needed aid to increasingly vulnerable civilians. "Famine is again on the horizon. Conflict is again escalating. The economy is again in tatters. Humanitarian agencies are again nearly broke. And then the new problems – Covid-19 is spreading out of control," UN relief chief Mark Lowcock said last week. The British diplomat told the UN Security Council that the coronavirus crisis had slashed remittances, which has long been a lifeline for Yemen, by as much as 70 per cent. He cited a recent survey that found that about half of Yemeni families have lost at least 50 per cent of their income since April. "Help Yemen now or watch the country fall into the abyss," he said. Mr Lowcock also reported depressing economic news from Syria, whose economy has been devastated by almost a decade of civil war. He said lockdown measures to contain the spread of Covid-19 was one factor in the Syrian economy expecting to contract by more than seven per cent this year. The diplomat added that job losses in recent months have increased unemployment from 42 per cent last year to close to 50 per cent now. Diplomats say western governments are reducing the amount of aid they send to humanitarian crisis zones as they focus on getting their own coronavirus-battered economies up and running again. Analysts say it has also taken the steam out of peace efforts as mediators swap face-to-face meetings for Zoom and Skype calls. In January, at a summit hosted by Germany in Berlin, world leaders committed to uphold a weapons embargo as part of a plan to end the nine-year conflict. "Now obviously Germany's focus is on propping up the European economy," said Mr Gowan, of the International Crisis Group think-tank. Experts are also watching with close concern Lebanon, currently mired in its worst economic crisis since its 1975-1990 civil war, with runaway inflation and bank capital controls fuelling poverty, despair and angry street protests. "It's a pretty bleak and depressing picture across the board," a UN diplomat said. "The economic fallout is just going to exacerbate conflict in those countries," he added.