KYIV – Talks in Paris concluded this week between the political advisers to the leaders of Ukraine, France, Germany and Russia amid a heightened security situation that Moscow has caused by massing more than 127,000 troops along its border with Ukraine. Meanwhile, the United States and NATO this week rejected Moscow’s main security demands that…...

Political advisers (from left) Jens Plotner of Germany, Andriy Yermak of Ukraine, Dmitry Kozak of Russia and Emmanuel Bonne of France gathered in Paris on January 26.