TOKYO (AP) — As nuclear talks with United States stall, North Korea is preparing to hold a big military parade on the 70th anniversary of the country's founding.

Satellite photos indicate troops have been practicing for weeks at a mockup of Pyongyang's Kim Il Sung Square. But two big questions remain: Who will attend? And will leader Kim Jong Un use the occasion to thumb his nose at Washington by displaying missiles North Korea claims are capable of striking the American heartland?

The parade will kick off a series of extravagant celebrations scheduled to mark Sunday's anniversary, including a...