Trump said he probably could withdraw from North Atlantic Treaty Organisation without congressional approval, but it won't be necessary.
NATO Secretary-General Jens Stoltenberg said, "We should first get to two percent", adding that eight of the 29 allies were meeting that target.
"We go into that meeting not looking for so much". He said the group affirmed the goal for member nations to contribute 2 percent of their respective gross domestic products toward defense spending by 2024.
This means that Trump is not able to use his executive power to pull America out of the alliance, in contrast to other global agreements such as the Iran nuclear deal or the Paris climate agreement, both of which Trump has withdrawn from. EURACTIV broke the story.
"What's more surprising, the fact that the President Trump is calling them out on that or that previous presidents haven't?" he asked. Nor has there lately been any suggestion of an unexplained affection on the part of a German leader for Russian President Vladimir Putin.
In a series of tweets before the meeting, Trump said: "Presidents have been trying unsuccessfully for years to get Germany and other rich NATO Nations to pay more toward their protection from Russian Federation". US Turkish relations have recently been strained because of issues ranging from Syria to Iran, but some diplomats say the two leaders - both criticised for their polarising politics - have established a bond.
Trump's biggest target for criticism, Germany, predicts that it will be spending 1.5 per cent of GDP on its military budget by 2024.
Trump has repeatedly slammed Merkel for supporting a new pipeline that would cement Berlin's client relationship with Russian Federation and increase Moscow's influence. Trump tweeted an hour before the second day of the summit got under way.
"I don't. I'm very consistent".
It followed an uncomfortable first round at the summit where anxious Western allies were subjected to the US president's "America first" approach. In the afternoon, he heads to his next stop: the United Kingdom.
The substance is the same military-grade toxin that almost killed a former Russian spy and his daughter in an earlier attack that Britain also blamed on Moscow.
Britain's Prime Minister Theresa May tried to ease the tensions on Wednesday by announcing additional troops for NATO's Afghan training mission, Reuters reported.
"I brought it up, no one brought it up but me".
White House spokeswoman Sarah Sanders said this is not a formal proposal and that Trump had merely "suggested" this increase.
"People are saying, 'He's picking on Germany.' Well, he was", Inhofe said with a chuckle, criticizing the German government for "not even trying to" meet a pledge to devote more to NATO's coffers.
U.S. officials have told Reuters that Washington is preparing another review of strategy, a year after Trump begrudgingly agreed to extend involvement in the 17-year-old war.
Trump was opposed to remaining in America's longest war, but his advisers convinced him to give it more time.