TODAY is the main event of the 2019 Nato summit in Watford.
Here's everything you need to know, including the venue, attendees and road closure information.
When does it start?
The main event takes place today, Wednesday, December 4.
Politicians from around the world arrived on Tuesday, December 3, for the talks.
2019 marks the 70th anniversary of the alliance's meetings.
The North Atlantic Treaty Organisation (Nato), started out in 1949 with just 12 countries as members.
FULL ITINERARY FOR WEDNESDAY, DECEMBER 4
- 07.30: NATO secretary general Jens Stoltenberg speaks ahead of summit
- Another press conference at 1.30pm post-working session
- 7.40am: Boris arrives at Nato
- 9am: World leaders arrive
- 10am: Talks begin
- Tory Minister Helen Whately and Shadow Cabinet Minister Laura Pidcock will be among the participants in this morning’s BBC Radio 4 Woman’s Hour election debate at 10am
- 11.00: Shadow Chancellor John McDonnell delivers speech on the economy in Birmingham pledging to end rip off Britain
- 2pm: Boris Johnson press conference
- 3pm: Trump press conference
- 730: Jo Swinson interview with Andrew Neil
Where is the summit held and where is The Grove Hotel?
The Nato 2019 summit is being held in Watford, Herts.
Some of the world's most important leaders are meeting at The Grove Hotel at Chandler's Cross.
Nato summits are a periodic opportunity for Heads of State and Heads of Government to meet and evaluate Nato's current strategies, evaluate the alliance's current position and brainstorm strategic direction.
What happened on the first day of Nato talks?
Donald Trump touched down in the UK on Monday, December 2, ready to attend the summit.
He was met by protesters ahead of an event at Buckingham Palace the following evening where he and other leaders were greeted by the Queen and Prince Charles.
The leaders met at the palace to mark 70 years of the alliance.
FULL LIST OF ATTENDING MEMBER COUNTRIES
- Albania
- Belgium
- Bulgaria
- Canada
- Croatia
- Czech Republic
- Denmark
- Estonia
- France
- Germany
- Greece
- Hungary
- Iceland
- Italy
- Latvia
- Lithuania
- Luxembourg
- Montenegro
- Netherlands
- Norway
- Poland
- Portugal
- Romania
- Slovakia
- Slovenia
- Spain
- Turkey
- United Kingdom
- United States
Who will be attending the meeting?
The summit's main event is the Nato leader's meeting.
The alliance includes 28 member states, with countries including Germany, Spain, Greece and Turkey joining, and represents a population of more than 900 million people.
The organisation is considered to be the largest and most powerful military alliance in history.
Attending the meeting in Hertfordshire will be Donald Trump, who is visiting the UK during the first week of December.
According to the "President Trump will have separate talks with German Chancellor Angela Merkel, French President Emmanuel Macron and Nato Secretary General Jens Stoltenberg and attend a working lunch with representatives from Estonia, Greece, Latvia, Poland, Romania, Lithuania, Bulgaria, and the United Kingdom."
Are there any road closures?
The summit will see heightened security, road closures and traffic - with police warning of significant disruption.
London
- Road closures around Green Park and St James' Park will still be in place on Wednesday, December 4
Watford
- Diversion via A41 to The Dome roundabout
- A412 St Albans Road to Town Hall roundabout and A411 Hempstead Roundabout
- All rights of way across The Grove Hotel will be closed until 8pm on Wednesday, December 4
What is Nato and what does it stand for?
Nato, or the North Atlantic Treaty Organisation, is an intergovernmental military alliance established in 1949.
It was formed with the signing of the North Atlantic Treaty in 1949 by 12 member states - Belgium, Canada, Denmark, France, Iceland, Italy, Luxembourg, the Netherlands, Norway, Portugal, the UK and the US.
Since then it has expanded to 28 member states, with countries including Germany, Spain, Greece and Turkey joining, and represents a population of more than 900 million people.
The organisation is considered to be the largest and most powerful military alliance in history.
Heads of government and state have met at 26 Nato summits since 1949 - the one before Watford's was held in Poland.