The HoL EU External Affairs Sub Committee has taken evidence on illegal migration stemming from Libya. More than 1 million are in the pipe-line, with EU Operation Sophia criticised for “incentivising failure”. The EU held the lead for Libyan border security in the porous Sahel after Gadhafi was overthrown, but failed to establish any control. This is one of the ten strategic security risks discussed in Chapter 6 of Belfast to Benghazi.
https://www.waterstones.com/book/belfast-to-benghazi/rupert-wieloch/9781861515667