President Donald Trump will meet the leaders of Azerbaijan and Armenia to sign a joint peace declaration aimed at ending decades of war at a White House meeting Friday, as well as pacts giving the US rights to develop a transit route through the South Caucasus.

Residents and politicians in Armenia and Azerbaijan are responding with cautious hope after their leaders signed a U.S.-brokered agreement aimed at ending decades of hostilities

Armenia still must amend its constitution to remove a reference to Nagorno-Karabakh, Azerbaijan's ambassador to Britain said.