Here are a few of your thoughts on the security debate... Keep them coming at #newsnight

We're just about to ask our guests about all things security, but first here are those key terms that you just heard from Evan:

• The Schengen Information System – a pan-European database covering anything from missing people to those involved in serious crimes, or who should not be in the EU. There are more than 46 million entries and last year Britain made quarter of a million inquiries on the database.
• The European Arrest Warrant, introduced in 2004; it expedites extraditions within the EU, and stops countries refusing them.
• There are other examples of information sharing which Britain stands aside from. The European DNA database holds police DNA, fingerprints and vehicle registrations. 
• Plans to collect Passenger Name Records or PNRs (the idea is to oblige airlines to hand over passenger data) have been debated since 2011, but has still not been implemented.

Rob Wainwright is the Director of Europol, the EU agency where member states' police forces come together to share criminal intelligence and combat international organised crime. A veteran of MI5 and the UK's National Criminal Intelligence Service, Mr Wainwright believes that EU cooperation plays a vital role in keeping Britain safe.

Richard Walton was the head of the Counter Terrorism Command at New Scotland Yard between 2011 and 2015. He says that Brexit would not affect the UK's ability to protect itself, and that if it left the EU, Britain would still be able to join in with EU programmes that have value.

Shami Chakrabarti was the Director of the civil liberties pressure group Liberty from 2003 to 2016. She is a recent convert to the Remain side, having campaigned for many years against what she saw as the EU's lack of accountability, but believes the benefits of European cooperation against globalised crime outweigh the costs.

Col Richard Kemp was the senior military officer attached to the Cabinet Office between 2001 and 2006, with responsibility for counter-terrorism. He also commanded the first Task Force Helmand in Afghanistan in 2003. He argues that Britain's security would be strengthened if it left the EU, because it would have more control over its borders.

Alan Johnson:

• Head of Labour's 'In' campaign
• Former Home Secretary and Secretary of State for Health
• Former postman and trade union official  

First in Evan’s hot seat is Alan Johnson, a former Labour Home Secretary. Johnson is firmly in favour of staying in the European Union, so much so that he is leading the Labour campaign to remain. Johnson has argued that the security of Britain is inextricably linked to staying in the EU. He has said “the lesson from the Paris [attack] is that to tackle terrorism we must stand shoulder to shoulder with our allies in Europe”.

Penny Mordaunt:

• Minister of State for the Armed Forces
• Worked as an aid worker in post-revolutionary Romania
• Royal Navy reservist at King Alfred on Whale Island

Up against Mr Johnson is Penny Mordaunt, Minister of State for the Armed Forces. In this role she is responsible for operations, operational policy, force generation and service personnel policy. Mordaunt argues that Britain should leave the EU, and that European free movement rules mean we cannot keep out those we suspect wish us harm. In her article here, external she argues that for the sake of Britain’s future security, it is time to leave.

Image source, Getty Images

In his film, Mark Urban mentioned in passing France's decision to leave Nato in the 1960s. What was all that about?

Well, the row began in 1959 after Charles de Gaulle reclaimed the French presidency. President De Gaulle was very concerned that Nato was overly-dominated by "les Anglo-Saxons'"(Britain and America). He wanted parity for France within Nato, and for Nato to extend its geographic scope to French overseas territories, including Algeria. The other countries rejected De Gaulle's proposal, so in March 1959, France withdrew its Mediterranean fleet from Nato, and, a few months later, asked the US to remove all of its nuclear weapons from French territory.

Throughout the 1960s, De Gaulle made friendly overtures to the Soviet Union in an attempt to demonstrate that France was not bound to walk in lockstep with America. And in 1966, France officially withdrew from the NATO Military Command Structure, ordering all foreign military personnel to leave France within a year. France nominally remained a member, but officially played no role in Nato decision-making.

Behind the scenes, however, US and French officials drew up a number of secret accords, the Lemnitzer-Ailleret Agreements, which laid out how French troops would revert back into Nato's command structure should war break out between East and West.

Eventually, after the end of the Cold War, and President Nicholas Sarkozy's decision to pivot French foreign policy back towards America, France revisited its policy, and in 2009, France officially rejoined the Nato Military Command Structure.