KYIV (Reuters) -Ukrainian President Volodymyr Zelenskiy has said that Russia has gathered 50,000 troops near Ukraine's northern Sumy region, but added that Kyiv had taken steps to prevent Moscow from conducting a large-scale offensive there.

Russia has massed more than 50,000 troops, including some of its best forces, near Ukraine's northeastern Sumy region, but Kyiv has taken steps to prevent them from conducting a large-scale offensive,