NATO Summit first day overshadowed by tensions between allies

US President Trump increased pressure on Nato allies over burden sharing, calling on allies to double defense spending targets to 4 percent.
NATO Secretary General Jens Stoltenberg (center L) shakes hands with U.S. President Donald Trump during a NATO summit in Brussels, Belgium, July 11, 2018. NATO leaders gather in Brussels for a two-day meeting. (Xinhua/Ye Pingfan)
NATO Secretary General Jens Stoltenberg (center L) shakes hands with U.S. President Donald Trump during a NATO summit in Brussels, Belgium, July 11, 2018. NATO leaders gather in Brussels for a two-day meeting. (Xinhua/Ye Pingfan)
Xinhua