"The United States is already talking to the governments of Turkey, Germany and Jordan and offering each help in investigating recent terror attacks, presidential special envoy," - Brett McGurk wrote.

Axar.az reports citing to Sputnik, in separate attacks Monday, Russian’s ambassador to Turkey, Andrey Karlov, was shot dead by a gunman while attending an art gallery event in the Turkish capital, Ankara, and nine people were killed when a truck was driven into shoppers at a Christmas market in Berlin, Germany.

In Jordan, 10 people, including four security guards, three policemen and a tourist, were killed by gunmen at Kerak Castle, a tourist site near the capital, Amman.

"In touch with counterparts in Jordan, Turkey, and Germany,” McGurk, the designated White House official dealing with the global coalition against Daesh, said in a Twitter message Monday. “US stands ready to provide appropriate support for ongoing investigations,” - Brett McGurk has written on his Twitter account.