SOUTH Africa and Mozambique have pledged to continue working together to overcome their common security problems, after recent joint operations have uncovered large caches of firearms. “The challenges facing our two nations cannot be resolved as individual problems,” said SA Security Minister Steve Tshwete after handing over a donation of five police vehicles to Mozambique’s Interior Minister Almerino Manhenje. Joint operations between Mozambican and South African police forces have made inroads in fighting drug and arms trafficking. In the last three months, more than 300 arms, mostly AK-47 assault rifles, were uncovered and destroyed in Mozambique.