Medvedev adds that visiting U.S. officials are likely to face difficult talks on Tuesday with their Russian counterparts, Sergei Lavrov and Anatoly Serdyukov.

• 梅德韦杰夫还说，到访的美国官员在星期二会晤俄罗斯外长拉夫罗夫和俄罗斯国防部长谢尔久科夫时，可能会面临一些困难。