Donald Trump hosted Nato Secretary General Jens Stoltenberg at the White House on April 12 for a “productive discussion about what more Nato can do in the fight against terrorism”.
“I complained about that a long time ago and they made a change, and now they do fight terrorism.
“I said it [Nato] was obsolete. It's no longer obsolete.”
Mr Trump repeated calls for Nato member states to contribute more funding.
"If other countries pay their fair share instead of relying on the United States to make up the difference we will all be much more secure,” he said.
Last month Mr Trump reportedly gave German Chancellor Angela Merkel a bill for £300 billion to cover fees he claims are owed to the alliance.
He is said to have come to figure by calculating how much German spending fell short of the two per cent GDP target, then added interest.
Nato members are supposed to spend two per cent of their GDP on defence, but only the UK, US and a handful of other nations currently do so.
11 things you need to know about NATO
Tue, February 14, 2017
NATO – The North Atlantic Treaty Organization is an intergovernmental military alliance based on the North Atlantic Treaty which was signed on 4th April 1949. The organization constitutes a system of collective defence whereby its member states agree to mutual defence in response to an attack by any external party.
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Every member country, no matter how large or small, has an equal say in discussions and decisions. Photo shows: Signing the North Atlantic Treaty which marked the beginning of NATO, 1949.
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Donald Trump has said that Nato is 'no longer obsolete'
Donald Trump hosted Nato Secretary General Jens Stoltenberg
What is Nato?
The North Atlantic Treaty Organisation (Nato) is a military alliance between the UK, US, Canada and 25 EU nations.
Its aim is to bind the US to defend Europe. Under Article V of the North Atlantic Treaty, an “armed attack against one” Nato member “shall be considered an attack against them all”.
If a Nato ally is attacked, each and every member will take necessary action to protect the victim.
The US’s military strength and large cache of nuclear weapons acts as a deterrent against forces who seek to attack Europe.
NATO training exercises
Wed, June 8, 2016
The North Atlantic Treaty Organization, also called the North Atlantic Alliance, is an intergovernmental military alliance based on the North Atlantic Treaty
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Polish troops land with parachutes at the military compound near Torun, central Poland as part of the NATO Anaconda-16 military exercise
Earlier this year the 28 Nato foreign ministers – including Boris Johnson – met
Which countries are Nato members?
The group was founded in 1949 with Britain, Belgium, Canada, Denmark, France, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal as its founding members.
They were joined by Greece and Turkey in 1952, Germany in 1955 and Spain in 1982.
The Czech Republic, Hungary and Poland became members in 1999, followed by Bulgaria, Estonia, Latvia, Lithuania, Romania, Solvakia and Slovenia in 2004.
Albania and Croatia both joined in 2009.
Montenegro is poised to become the 29th member state after the US gave approval to its accession.
NATO membership is open to “any other European state in a position to further the principles of this Treaty and to contribute to the security of the North Atlantic area”.