The US welcomes the recurrent meeting of the Armenian and Azeri Presidents Robert Kocharian and Ilham Aliyev over settlement of the Nagorno Karabakh conflict held in Warsaw May 15. US Ambassador to Armenia John Evans stated it to journalists today. In his words, "the settlement of the Nagorno Karabakh conflict is indeed a complex issue and it cannot be solved in one night." At that the diplomat noted that Steven Mann - the US Ambassador to the OSCE MG, under whose aegis the Karabakh settlement proceeds, "is better informed in that issue," Regnum news agency reported.