By Tuvan Gumrukcu, Humeyra Pamuk and Sabine SieboldANKARA, July 7 (Reuters) - NATO leaders unveiled arms deals worth tens of billions of dollars in Turkey on Tuesday, driving home the message that they are heeding U.S. calls to spend more to defend Europe even as President Donald Trump said he felt let down and renewed his push to control Greenland.

President Donald Trump will be heading to Ankara, Turkey, for the annual NATO summit. Last year, he pushed NATO allies to spend more on defense.

In a few days Turkey will play host to NATO’s leaders for a high-stakes summit that some anticipate could be historic.