美國和俄羅斯的關係從重啓走向倒退大綱

Russia on Wednesday suspended a three-year-old agreement with the United States on cooperation on nuclear and energy-related research — the latest Move signifying a deteriorating bilateral relationship.

"It's frankly concerning," a senior U.S. official told VOA on condition he not be named.

Russian President Vladimir Putin on Monday also signed a decree suspending an agreement with the U.S. on disposing weapons-grade plutonium, citing "unfriendly actions" by Washington — a reference to U.S.-led sanctions on Moscow for its actions in Ukraine.

Nullifying the plutonium pact is "a real tragedy because these are areas where we have successfully cooperated in the past," State Department spokesman Mark Toner said during Wednesday's daily briefing.

The United States has halted Syria cease-fire direct talks with Russia amid continuing military attacks against civilian targets, with the U.S. administration declaring its patience at an end with Moscow. However, Secretary of State John Kerry and Russian Foreign Minister Sergei Lavrov spoke again Wednesday about Syria.

Diplomats in both Washington and Moscow say the United States requested the call, which also covered the situations in Ukraine and North Korea.俄羅斯週三暫停了同美國在覈能以及與能源相關研究的一個三年合作協議，這一最新舉動標誌着兩國關係的繼續惡化。

一位不願意透露姓名的美國資深官員對美國之音說：“坦率地講，這一情況令人擔憂。”

俄羅斯總統普京週一還簽署了一道命令，暫停了一項與美國達成的處理武器級鈈的協議，理由是華盛頓採取了“不友善的行動”，意指以美國爲首的國家對莫斯科在烏克蘭的行動進行了制裁。

美國國務院發言人託納在週三的每日通報會上說，廢棄鈈協議是“一個真正的悲劇，因爲在這些領域內，我們以前的合作是成功的。”

由於針對平民目標的襲擊持續不斷，美國中斷了和俄羅斯就敘利亞停火的直接會談。美國政府宣稱已經對莫斯科失去耐心。但美國國務卿克里和俄羅斯外長拉夫羅夫週三再次就敘利亞問題進行了交談。

華盛頓和莫斯科的外交官員均表示，美國主動提出了電話交談的要求，交談內容還涉及烏克蘭以及朝鮮問題。