ISTANBUL Armenia and the US on Monday signed a joint statement on cooperation between the two countries in the peaceful use of nuclear energy. The Joint Statement on the Completion of Negotiations on an Agreement for Peaceful Nuclear Cooperation was signed following talks between Armenian Prime Minister Nikol Pashinyan and US Vice President JD Vance. Vance arrived in Yerevan in the first-ever visit by a sitting US vice president to the South Caucasus nation. In a joint press conference