NATO is concerned about support Russia could provide for North Korea’s missile and nuclear programs, the alliance’s head said on Tuesday as Russian President Vladimir Putin began his first trip to the reclusive nuclear-armed country in 24 years.
Putin, on a state visit for talks with North Korean leader Kim Jong Un, vowed to deepen trade and security ties and to support the North against the U.S., a close ally of its bitter rival South Korea.
The U.S. has…