Trump, who has had a contentious relationship with large technology companies like Facebook and Google since becoming president, said he had no particular affinity for those companies, but nonetheless took a proprietary interest. "Sometimes I think he does things that are counterproductive for his own country". He has since tempered his criticism somewhat.More news: Death toll nears 100 in Syria's Idlib - monitor
Fellow NATO leaders will be relieved that Trump, who derailed last year's summit agenda with his demands, appears to be satisfied with how the allies have stepped up their military investment.
Trump hit numerous same notes that he hits regularly in White House lawn press sprays and on Twitter, but what makes this event unique is that it flouts the accepted "water's edge" decorum to not discuss domestic politics while on foreign soil.More news: Why Disney Plus Added Tony Stark's Big 'Avengers: Endgame' Scene
After Russia annexed the Crimean Peninsula in 2014, North Atlantic Treaty Organisation countries halted their post-Cold War spending cuts and began increasing spending.
Macron said that he saw a waning commitment to the transatlantic alliance by the main guarantor of stability in Europe - the United States - citing Washington's failure to consult the allies before pulling forces out of northern Syria in October.
Turkish President Recep Tayyip Erdogan has said he will oppose Nato's plan for the defence of the Baltic if it doesn't back Turkey over its fight against Kurdish groups it considers terrorists. The clause has only ever been activated once, after the 9-11 attacks in the United States.More news: Utah school substitute chides student who's thankful for adoptive gay dads
World leaders will be hosted at Buckingham Palace on Tuesday by Queen Elizabeth, and have the news conference Dec 4 in Hertfordshire, in England. One short working session will be held at a golf resort in outer London on Wednesday.