Chiefs of staff of the Russian and U.S. militaries held a telephone call, the U.S. military reported.
Both sides provided few details of the call between Chairman of the U.S. Joint Chiefs of Staff General Mark Milley and General Valery Gerasimov, the head of Russian’s military general staff.
But the call comes as Ukraine has said that Russia is building up armed forces near its borders in a threat to the country’s security.
"The two military leaders exchanged their views on issues of mutual concern," a U.S. military readout of the call said.
Similar calls between the top military officials in the United States and Russia have taken place occasionally, including one earlier this year, Reuters reported.
