Oil prices rose around 3% on Monday on reports of a near total production stoppage in Libya, adding to earlier gains on concerns that escalating conflict in the Middle East could disrupt regional oil supplies. Brent crude futures climbed $2.28, or 2.89%, to $81.30 a barrel by 1316 GMT, while U.S. crude futures were at $77.30 a barrel, up $2.47, or 3.3%. Brent's intra-day high of $81.40 a barrel is the highest the contract has traded in 11 days. Prices jumped after Libya's eastern-based...