Oil prices rose on Thursday on investors’ concerns supply from the key Middle East producing region may not fully resume amid doubts the two-week ceasefire between the US and Iran will hold and as the crucial Strait of Hormuz remains restricted. Brent crude futures were up $2.6, or 2.74%, at $97.35 a barrel at 0048 GMT, while U.S. West Texas Intermediate (WTI) crude rose $3.02, or 3.2%, to $9