Oil prices rise on upbeat factory activity in China and tension in the Middle East as Israel resumes attacks on Lebanon despite a ceasefire pact. China's factory activity expanded at the fastest pace in five months in November, boosting Chinese firms' optimism. Traders are also monitoring developments in Syria and the wider Middle East. OPEC+ is expected to postpone its oil output hike due to start in January and the meeting this week will decide policy for the early months of 2025.