THREE soldiers on a Southern African peacekeeping mission in the Democratic Republic of Congo were killed and three others wounded after a hostile mortar round landed near their camp, the Southern African Development Community (SADC) said. Regional bloc SADC deployed its mission to Congo on December 15 last year to help the government address instability and tackle armed groups in its restive eastern region, where violent clashes have escalated in a conflict that has lasted decades. "This unfortunate incident happened after a hostile mortar round had fallen near the camp they were staying (at)," the 16-member bloc said in a statement.…