A severe fuel shortage in oil-rich Libya has led to the suspension of the country’s top fuel supply official as tit-for-tat moves between rival governments escalate and sound alarm bells over the fragility of the political status quo. Rival governments that control different parts of Libya’s oil wealth chain are jockeying for position ahead of another showdown that could once again lead to a halt of Libyan oil exports. On Wednesday, the PM of Libya’s Tripoli-based Government of National Unity (GNU), Abdul Hamid Dbeibah,…