bamako four unite nations peacekeepers malian soldier kill 21 people wound two separate attack unknown assailants mali friday u.n. mission say regional armies u.n. force french u.s. soldier struggle halt grow influence islamist militants link al qaeda islamic state west africa sahel region mali u.n. mission minusma suffer high number fatalities among current u.n. peacekeeping operations condemn strong term attack befall minusma force well malian army u.n. mission head mahamat saleh annadif say statement first incident friday three peacekeepers malian soldier kill come attack joint operation menaka region near border niger area see spike violence last year sixteen peacekeepers one civilian also wound late day around noon 1200 gmt minusma convoy central mopti region target mission describe complex attack militants use explosive devices rocket launchers one u.n. soldier kill three others seriously wound minusma say statement mission specify nationalities soldier kill wound either attack 2013 french-led military intervention drive back militants seize control mali desert north year early regroup launch regular attack malian soldier u.n. peacekeepers civilians islamist group increasingly exploit porous border mali neighbor niger burkina faso expand range operations alarm western power france unite state troop deploy west africa new regional force compose soldier mali mauritania niger burkina faso chad so-called g5 sahel nations launch first operations late last month four u.n. peacekeepers kill two separate attack mali