article_snippet: Kano, Nigeria (CNN)Hundreds of troops from Chad and Niger Niger launched a ground and aerial offensive against Boko Haram in northeastern Nigeria on Sunday, according to residents and military sources from Niger.
article_snippet: The offensive is taking place along the Niger-Nigeria border, sources said, effectively opening a new front in the fight against the Islamist terror group.
article_snippet: Early this morning, troops from Niger and Chad launched ground and air raids against Boko Haram into Nigeria, and the operation is still continuing," said a military official in the border town of Diffa, Niger.
article_snippet: Nigeria and Nigeria neighbors have recently mounted a coordinated offensive against Boko Haram militants in the Borno state, where the Islamist group has seized a large swathe of territory.  
article_snippet: Nigeria shares a border with Niger, Chad and Cameroon there.
article_snippet: Nigeria has vowed to liberate all of Nigeria territories from Boko Haram before the general elections, which begin on March 28, to enable displaced residents return to displaced residents homes for the elections.
highlights_snippet: Troops from Chad and Niger launch offensive against Boko Haram .
  