LONDON: Shipping giant Maersk is maintaining food and medicine supply lines via alternative land-bridge routes in the Gulf that still have some spare capacity despite the Iran war, its regional head told Reuters on Thursday. The war that began with US-Israeli strikes on Iran last month, followed by Iranian attacks across the region and the closing of the Strait of Hormuz, has brought shipping in the Gulf to a near standstill, rippling across global supply chains. Danish container shipping group A.P.