Nigeria is currently grappling with a spate of mass abductions. But the vast country - bigger than France and Germany combined - also faces many other security challenges.
Recent attempts by US President Donald Trump and his supporters to frame the insecurity purely as the persecution of Christians overlooks the complexity of Africa's most-populous nation.
There are more than 250 ethnic groups in Nigeria, which is roughly divided into a mainly Muslim north, a largely Christian south, with intermingling in the middle - and the government says people of all faiths have been victims of attacks.
There are criminal gangs in the north-west, an Islamist insurgency in the north-east, clashes over land in central regions and separatist unrest in the south-east - leaving the 400,000-strong army and the police force of 370,000 officers overstretched.
Here's a breakdown of the main armed groups and flashpoints:
