Markovic, is the leader of Montenegro, a small Balkan nation of 600,000 attending its first summit as a North Atlantic Treaty Organisation member. He said the allies would also meet Tusk's demands to share more of the security burden and reaffirm a commitment to spend two percent of annual GDP on defence.
"I will be making clear to President Trump today that intelligence that is shared between law enforcement agencies must remain secure", May said.
"That is not fair to the taxpayers of the United States", he said.
"We agreed that NATO will become a full member of the global coalition, in which all 28 allies already take part", NATO Secretary General Jens Stoltenberg told a press conference after Thursday's NATO summit.
"Should the president abdicate both, no one would be happier than Vladimir Putin", The Times concluded.
He said the Manchester bombing revealed the need for the military alliance to focus on "terrorism and immigration" in addition to threats from Russian Federation.
Analyst Thomas Wright of the Washington-based Brookings Institution said Trump's failure to publicly declare this was "shocking and damaging".More news: Robbie Williams cries discussing Manchester terror attack
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After meeting with Trump on Thursday at the EU, European Council president Donald Tusk said he and the USA precedent agreed on the need to combat terrorism but some differences loomed large. A plan to reaffirm the spending pledge made three years ago "means nothing more or less than that", she said. He then adjusts his jacket.
The EU's trade focus has turned to the Asia-Pacific region, including some of the 11 nations that were set to join forces with the United States in the Trans-Pacific Partnership, until Trump's rejection of that deal on his first day in office.
"The Germans are bad, very bad", he said, according to the German weekly's online edition.
"I think you can expect the president to be very tough on them, saying, 'Look the U.S.is spending 4 percent. Terrible. We will stop this", he reportedly said.
But Trump increased the pressure, calling that agreement made at a summit in Wales in 2014 "the bare minimum".
Trump came to Brussels direct from a meeting with Pope Francis at the Vatican, after visiting Saudi Arabia, Israel and the Palestinian Territories.