The OCSE Minsk Group co-chair James Warlick welcomed the new US ambassadors to Armenia and Azerbaijan. On his Twitter he wrote: "We welcome two new ambassadors: Rick Mills to Armenia and Bob Cekuta to Azerbaijan. I look forward to working with you on NK peace."
In 2014 the US president Barack Obama nominated Richard Mills as his pick to become the US Ambassador to Armenia, after which his candidacy was confirmed by the US Senate. Since 2012 Mills has been Deputy Chief of Mission at the U.S. Embassy Beirut.