U.S.'s Kerry to visit Ukraine next week -State Department

WASHINGTON (Reuters) - U.S. Secretary of State John Kerry will visit Kiev on Thursday for talks with President Petro Poroshenko and other Ukrainian officials, the U.S. State Department said on Friday.

President Barack Obama this week voiced deep concern about renewed fighting between Russian-backed separatist and government forces in eastern Ukraine and said the United States is considering all options short of military action to isolate Russia.