Azerbaijan and Armenia sign agreement at the White House

President Donald Trump, centre, shakes hands with Armenian prime minister Nikol Pashinyan, right, and Azerbaijan president Ilham Aliyev during a trilateral signing ceremony (Mark Schiefelbein/AP)

The leaders of Armenia and Azerbaijan shook hands at a White House peace summit before signing an agreement aimed at ending decades of conflict.

President Donald Trump was in the middle as Azerbaijani president Ilham Aliyev and Armenian prime minister Nikol Pashinyan flanked him on either side.