A small plane crashed on Monday in South Sudan near the capital Juba, killing all 13 passengers and the pilot, local officials said.On top of instability, conflict and poverty, South Sudan also lacks reliable transport infrastructure with frequent plane crashes attributed to overloading and bad weather.The plane was a Cessna that departed Juba International Airport at 9.15am local time and crashed about 20km (12 miles) from the capital with no survivors, the South Sudanese Civil Aviation...