FILE - In this Tuesday June 17, 2014 file photo, soldiers from NATO countries practice during a military exercise 'Saber Strike 2014' at the Rukla military base some 120 kms (75 miles) west of the capital Vilnius, Lithuania. As the Ukraine crisis intensifies, the NATO countries closest to Russia have been pushing the alliance to set up permanent bases with troops on their land _ with historical fears of Moscow heightened by new Russian aggression. But as the alliance holds a summit on Sept. 4 - Sept. 5, 2014, where the Polish and Baltic request will be discussed, it’s looking increasingly unlikely they will get that. A key reason is opposition from Germany and some other members who argue that it would violate a 1997 agreement. (AP Photo/Mindaugas Kulbis, File)