From threats to praise, Trump keeps allies guessing at NATO summit

By Gram Slattery and Humeyra Pamuk

ANKARA, July 9 (Reuters) - As they prepared for this week's NATO summit in Ankara, the leaders of America's allies wondered which Donald Trump would join them - the friendly U.S. president who has praised the dedication of NATO allies or the testy Trump who has threatened to implode the 77-year-old alliance?

It turns out they got both.