ANKARA, Turkey (Reuters) -- US President Donald Trump threw a summit of NATO leaders into disarray on Wednesday as he demanded the United States cut trade ties with Spain and made renewed claims on Greenland, but later changed tack and said there had been love and "a lot of unity." Speaking in the Turkish capital Ankara, Trump called Madrid a "terrible partner" in NATO as he railed against allies for not supporting the war on Iran and ordered Treasury Secretary Scott Bessent to halt all trade wi