Boko Haram and its Daesh-affiliated Islamic State West Africa Province (ISWAP) faction have recently stepped up attacks on military and civilian targets.
Mohammed Adoke, who also held the post of attorney general, was one of several high-profile ex-officials wanted over a graft case centred on a $1.3 billion oil deal involving international oil giants Eni and Shell.
The attack was carried out by heavily-armed terrorists in the western Tillaberi region. "A substantial number of terrorists were neutralised," the defence ministry said. Niger extended a partial emergency in place since 2017 for another three months.
The crew were seized after Hong Kong-flagged crude supertanker, the Nave Constellation, was attacked 77 nautical miles off Bonny Island on December 3.
According to a report by a French NGO, far-right terrorism has increased 320 percent in recent years and 80 percent of terror victims are Muslim.
This is the latest in a long chain of tit-for-tat violence that has plagued Nigeria's northwest.
The move is thought to be in retaliation for Nigeria shutting its borders. The country made the protectionist move to stop cheap imports damaging local markets.
The CFA Franc has always seen as a vestige of colonialism, but now eight West African countries are aiming to decolonise and start their own currency.
The Independent Electoral Commission of Nigeria says over 31,000 police had been deployed, as well as 87 gunboats, to prevent, or deal with, any electoral violence.
In an escalating tit-for-tat trade war, the Ghana Union of Traders Association shut down almost 70 Nigerian-owned businesses because of Nigeria’s closure of its border to imports and exports.
Nigeria launched a crackdown on illegal religious schools and rehabilitation centres in late September. Nearly 1,500 people have been rescued since September.
Artist Yinka Shonibare's programme aims to bring painters, sculptors and other creatives to the West African nation's commercial capital, Lagos.
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